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Species: Imparfinis mirini Caption: Albino, Rio Pardo basin, ventral view	Species: Astroblepus caquetae Caption: Close-up of head, Ventral view
Species: Hypoptopoma inexspectatum Caption: Close-up of head, ventral view	Species: Otocinclus mariae Caption: Close-up of head, ventral view
Species: Platystacus cotylephorus Caption: Close-up of ventral view	Species: Hemiloricaria sp. (3) Caption: Close-up of ventral view
Species: Hemiloricaria sp. (4) Caption: Close-up of ventral view	Species: Hemiloricaria teffeana Caption: Close-up of ventral view
Species: Lamontichthys llanero Caption: Close-up of ventral view	Species: Loricariichthys anus Caption: Close-up of ventral view
Species: Glyptothorax scrobiculus Caption: Close-up of ventral view	Species: Acestridium dichromum Caption: Close-up of ventral view of head
Species: Aposturisoma myriodon Caption: Close-up of ventral view of head	Species: Metaloricaria paucidens Caption: Close-up of ventral view of head
Species: Synodontis polli Caption: Close-up of ventral view of head	Species: Chauliocheilos saxatilis Caption: Close-up of ventral view of male's head
Species: Ageneiosus uranophthalmus Caption: Close-up ventral view	Species: Loricaria birindellii Caption: Close-up ventral view
Species: Pseudorinelepis sp. (L095) Caption: Close-up ventral view	Species: Pseudecheneis sulcata Caption: Close-up ventral view
Species: Pseudolaguvia virgulata Caption: Close-up ventral view	Species: Hemiloricaria melini Caption: Close-up ventral view of fry
Species: Otocinclus vittatus Caption: Close-up ventral view of mouth and chest	Species: Chaetostoma formosae Caption: Female - ventral view
Species: Pseudohemiodon platycephalus Caption: Female - ventral view	Species: Rineloricaria langei Caption: Female - ventral view
Species: Rineloricaria maacki Caption: Female - ventral view	Species: Sturisomatichthys aureus Caption: Female - ventral view
Species: Megalodoras uranoscopus Caption: Female ventral view	Species: Peckoltia sp. `RIO NEGRO II` Caption: Female, ventral view
Species: Hypostomus sp. (L346) Caption: Fry, ventral view	Species: Parotocinclus sp. `RIO CAQUETA` Caption: Gravid female, ventral view
Species: Pareiorhaphis vetula Caption: Holotype, male, ventral view	Species: Centromochlus meridionalis Caption: Holotype, male; Ventral view
Species: Xyliphius anachoretes Caption: Holotype, Ventral view	Species: Corydoras apiaka Caption: Holotype, ventral view
Species: Pseudotanganikallabes prognatha Caption: Holotype, ventral view	Species: Hemiancistrus furtivus Caption: Holotype, ventral view
Species: Hypancistrus margaritatus Caption: Holotype, Ventral view	Species: Hypancistrus phantasma Caption: Holotype, Ventral view
Species: Otocinclus mangaba Caption: Holotype, ventral view	Species: Corydoras froehlichi Caption: Holotype; ventral view
Species: Astroblepus sabalo Caption: Intromittent organ of sexually mature male. (A) Lateral view. (B) Ventral view. af, anal fin.	Species: Synodontis sp. hybrid(3) Caption: Juvenile - ventral view
Species: Farlowella platorynchus Caption: Juvenile ventral view	Species: Spectracanthicus punctatissimus Caption: L030 ventral view
Species: Spectracanthicus punctatissimus Caption: L030 ventral view	Species: Spectracanthicus punctatissimus Caption: L030 ventral view
Species: Centromochlus ferrarisi Caption: Male (Ventral view of holotype)	Species: Chaetostoma formosae Caption: Male - close-up of ventral view
Species: Chaetostoma formosae Caption: Male - ventral view	Species: Rineloricaria langei Caption: Male - ventral view
Species: Rineloricaria maacki Caption: Male - ventral view	Species: Sturisomatichthys aureus Caption: Male - ventral view
Species: Megalodoras uranoscopus Caption: Male ventral view	Species: Peckoltia sp. `RIO NEGRO II` Caption: Male, ventral view
Species: Sturisomatichthys aureus Caption: One day old fry - ventral view	Species: Centromochlus meridionalis Caption: Paratype, female; Ventral view
Species: Hypostomus ancistroides Caption: Rio Jau, Brazil. Ventral view	Species: Pseudopimelodus bufonius Caption: Rio Xingu - 84mm SL - Ventral view
Species: Hypancistrus sp. (L270) Caption: Six month old juvenile (ventral view)	Species: Panaque schaeferi Caption: Subadult, 4 years old (same as 2yo), >40 cm TL, ventral view
Species: Ancistrus falconensis Caption: Type specimen - ventral view	Species: Proeutropiichthys taakree Caption: Ventral view
Species: Acrochordonichthys guttatus Caption: Ventral view	Species: Akysis bilustris Caption: Ventral view
Species: Akysis pulvinatus Caption: Ventral view	Species: Akysis vespa Caption: Ventral view
Species: Breitensteinia insignis Caption: Ventral view	Species: Breitensteinia insignis Caption: Ventral view
Species: Pseudobagarius inermis Caption: Ventral view	Species: Pseudobagarius meridionalis Caption: Ventral view
Species: Pseudobagarius similis Caption: Ventral view	Species: Amblyceps arunachalensis Caption: Ventral view
Species: Amblyceps protentum Caption: Ventral view	Species: Liobagrus anguillicauda Caption: Ventral view
Species: Xiurenbagrus gigas Caption: Ventral view	Species: Amphilius grandis Caption: Ventral view
Species: Amphilius jacksonii Caption: Ventral view	Species: Amphilius krefftii Caption: Ventral view
Species: Amphilius longirostris Caption: Ventral view	Species: Amphilius maesii Caption: Ventral view
Species: Amphilius natalensis Caption: Ventral view	Species: Amphilius opisthophthalmus Caption: Ventral view
Species: Belonoglanis brieni Caption: Ventral view	Species: Dolichamphilius brieni Caption: Ventral view
Species: Phractura scaphyrhynchura Caption: Ventral view	Species: Tetracamphilius angustifrons Caption: Ventral view
Species: Trachyglanis ineac Caption: Ventral view	Species: Trachyglanis ineac Caption: Ventral view
Species: Trachyglanis sanghensis Caption: Ventral view	Species: Zaireichthys mandevillei Caption: Ventral view
Species: Zaireichthys rotundiceps Caption: Ventral view	Species: Gogo atratus Caption: Ventral view
Species: Gogo brevibarbis Caption: Ventral view	Species: Ariopsis assimilis Caption: Ventral view
Species: Arius acutirostris Caption: Ventral view	Species: Hexanematichthys mastersi Caption: Ventral view
Species: Neoarius graeffei Caption: Ventral view	Species: Netuma bilineata Caption: Ventral view
Species: Osteogeneiosus militaris Caption: Ventral view	Species: Sciades herzbergii Caption: Ventral view
Species: Bunocephalus colombianus Caption: Ventral view	Species: Bunocephalus knerii Caption: Ventral view
Species: Ernstichthys megistus Caption: Ventral view	Species: Pterobunocephalus depressus Caption: Ventral view
Species: Pterobunocephalus depressus Caption: Ventral view	Species: Astroblepus boulengeri Caption: Ventral view
Species: Astroblepus brachycephalus Caption: Ventral view	Species: Astroblepus chotae Caption: Ventral view
Species: Astroblepus cirratus Caption: Ventral view	Species: Astroblepus eigenmanni Caption: Ventral view
Species: Astroblepus festae Caption: Ventral view	Species: Astroblepus fissidens Caption: Ventral view
Species: Astroblepus guentheri Caption: Ventral view	Species: Astroblepus heterodon Caption: Ventral view
Species: Astroblepus homodon Caption: Ventral view	Species: Astroblepus mancoi Caption: Ventral view
Species: Astroblepus marmoratus Caption: Ventral view	Species: Astroblepus orientalis Caption: Ventral view
Species: Astroblepus retropinnus Caption: Ventral view	Species: Astroblepus simonsii Caption: Ventral view
Species: Astroblepus taczanowskii Caption: Ventral view	Species: Astroblepus vaillanti Caption: Ventral view
Species: Astroblepus whymperi Caption: Ventral view	Species: Centromochlus concolor Caption: Ventral view
Species: Tetranematichthys barthemi Caption: Ventral view	Species: Trachelyichthys decaradiatus Caption: Ventral view
Species: Trachelyopterus sp. (4) Caption: Ventral view	Species: Bagrichthys macracanthus Caption: Ventral view
Species: Mystus velifer Caption: Ventral view	Species: Nanobagrus lemniscatus Caption: Ventral view
Species: Pseudomystus stenogrammus Caption: Ventral view	Species: Tachysurus brevianalis Caption: Ventral view
Species: Tachysurus eupogon Caption: Ventral view	Species: Tachysurus nubilosus Caption: Ventral view
Species: Tachysurus spilotus Caption: Ventral view	Species: Tachysurus tokiensis Caption: Ventral view
Species: Corydoras lacrimostigmata Caption: Ventral view	Species: Corydoras lymnades Caption: Ventral view
Species: Corydoras spilurus Caption: Ventral view	Species: Corydoras trilineatus Caption: Ventral view
Species: Megalechis thoracata Caption: Ventral view	Species: Scleromystax salmacis Caption: Ventral view
Species: Cetopsis baudoensis Caption: Ventral view	Species: Chaca serica Caption: Ventral view
Species: Clariallabes longicauda Caption: Ventral view	Species: Clarias dhonti Caption: Ventral view
Species: Clarias engelseni Caption: Ventral view	Species: Clarias gracilentus Caption: Ventral view
Species: Clarias teijsmanni Caption: Ventral view	Species: Tanganikallabes alboperca Caption: Ventral view
Species: Tanganikallabes mortiauxi Caption: Ventral view	Species: Tanganikallabes stewarti Caption: Ventral view
Species: Uegitglanis zammaranoi Caption: Ventral view	Species: Xenoclarias holobranchus Caption: Ventral view
Species: Chrysichthys acsiorum Caption: Ventral view	Species: Chrysichthys turkana Caption: Ventral view
Species: Notoglanidium maculatum Caption: Ventral view	Species: Parauchenoglanis punctatus Caption: Ventral view
Species: Acanthodoras cataphractus Caption: Ventral view	Species: Acanthodoras spinosissimus Caption: Ventral view
Species: Agamyxis pectinifrons Caption: Ventral view	Species: Amblydoras nauticus Caption: Ventral view
Species: Doras phlyzakion Caption: Ventral view	Species: Leptodoras nelsoni Caption: Ventral view
Species: Leptodoras rogersae Caption: Ventral view	Species: Orinocodoras eigenmanni Caption: Ventral view
Species: Platydoras brachylecis Caption: Ventral view	Species: Rhynchodoras xingui Caption: Ventral view
Species: Imparfinis stictonotus Caption: Ventral view	Species: Phenacorhamdia boliviana Caption: Ventral view
Species: Phreatobius dracunculus Caption: Ventral view	Species: Pimelodella vittata Caption: Ventral view
Species: Rhamdia laticauda Caption: Ventral view	Species: Pseudeutropius mitchelli Caption: Ventral view
Species: Ictalurus pricei Caption: Ventral view	Species: Prietella phreatophila Caption: Ventral view
Species: Acestridium gymnogaster Caption: Ventral view	Species: Acestridium martini Caption: Ventral view
Species: Acestridium scutatum Caption: Ventral view	Species: Acestridium triplax Caption: Ventral view
Species: Ancistomus wernekei Caption: Ventral view	Species: Ancistrus aff. bolivianus Caption: Ventral view
Species: Ancistrus brevipinnis Caption: Ventral view	Species: Ancistrus caucanus Caption: Ventral view
Species: Ancistrus centrolepis Caption: Ventral view	Species: Ancistrus cf. cirrhosus Caption: Ventral view
Species: Ancistrus claro Caption: Ventral view	Species: Ancistrus falconensis Caption: Ventral view
Species: Ancistrus heterorhynchus Caption: Ventral view	Species: Ancistrus lineolatus Caption: Ventral view
Species: Ancistrus marcapatae Caption: Ventral view	Species: Ancistrus montanus Caption: Ventral view
Species: Ancistrus occidentalis Caption: Ventral view	Species: Ancistrus ranunculus Caption: Ventral view
Species: Ancistrus sp. (L159) Caption: Ventral view	Species: Ancistrus sp. (L325) Caption: Ventral view
Species: Ancistrus sp. `LOWER RIO NEGRO` Caption: Ventral view	Species: Ancistrus sp. `RIO MAMORE` Caption: Ventral view
Species: Ancistrus sp. `RIO UCAYALI` Caption: Ventral view	Species: Ancistrus tolima Caption: Ventral view
Species: Andeancistrus eschwartzae Caption: Ventral view	Species: Andeancistrus platycephalus Caption: Ventral view
Species: Apistoloricaria ommation Caption: Ventral view	Species: Baryancistrus cf. niveatus Caption: Ventral view
Species: Baryancistrus demantoides Caption: Ventral view	Species: Baryancistrus sp. (L081) Caption: Ventral view
Species: Baryancistrus sp. (L142) Caption: Ventral view	Species: Chaetostoma anale Caption: Ventral view
Species: Chaetostoma breve Caption: Ventral view	Species: Chaetostoma dorsale Caption: Ventral view
Species: Chaetostoma milesi Caption: Ventral view	Species: Chaetostoma sp. (5) Caption: Ventral view
Species: Chaetostoma sp. (L455) Caption: Ventral view	Species: Chaetostoma sp. (L455) Caption: Ventral view
Species: Chaetostoma sp. (L455) Caption: Ventral view	Species: Chaetostoma vagum Caption: Ventral view
Species: Chauliocheilos saxatilis Caption: Ventral view	Species: Cordylancistrus platyrhynchus Caption: Ventral view
Species: Cordylancistrus platyrhynchus Caption: Ventral view	Species: Cordylancistrus torbesensis Caption: Ventral view
Species: Corumbataia tocantinensis Caption: Ventral view	Species: Crossoloricaria sp. `PERU` Caption: Ventral view
Species: Crossoloricaria sp. `PERU` Caption: Ventral view	Species: Dekeyseria sp. (L052) Caption: Ventral view
Species: Delturus sp. (1) Caption: Ventral view	Species: Farlowella mariaelenae Caption: Ventral view
Species: Farlowella mariaelenae Caption: Ventral view	Species: Farlowella nattereri Caption: Ventral view
Species: Farlowella oxyrryncha Caption: Ventral view	Species: Farlowella oxyrryncha Caption: Ventral view
Species: Farlowella vittata Caption: Ventral view	Species: Harttia dissidens Caption: Ventral view
Species: Harttia fowleri Caption: Ventral view	Species: Harttia punctata Caption: Ventral view
Species: Hemiancistrus cerrado Caption: Ventral view	Species: Hemiancistrus landoni Caption: Ventral view
Species: Hemiancistrus sp. (L476) Caption: Ventral view	Species: Hemiancistrus subviridis Caption: Ventral view
Species: Hemiloricaria cacerensis Caption: Ventral view	Species: Hemiloricaria eigenmanni Caption: Ventral view
Species: Hemiloricaria formosa Caption: Ventral view	Species: Hemiloricaria sp. (1) Caption: Ventral view
Species: Hirtella carinata Caption: Ventral view	Species: Hisonotus chromodontus Caption: Ventral view
Species: Hisonotus chromodontus Caption: Ventral view	Species: Hisonotus francirochai Caption: Ventral view
Species: Hisonotus vespuccii Caption: Ventral view	Species: Hypancistrus contradens Caption: Ventral view
Species: Hypancistrus sp. (L066) Caption: Ventral view	Species: Hypancistrus sp. (L136C) Caption: Ventral view
Species: Hypancistrus sp. (L174) Caption: Ventral view	Species: Hypancistrus sp. (L260) Caption: Ventral view
Species: Hypancistrus sp. (L333) Caption: Ventral view	Species: Hypancistrus sp. `LOWER RIO XINGU` Caption: Ventral view
Species: Hypancistrus sp. `LOWER RIO XINGU` Caption: Ventral view	Species: Hypancistrus zebra Caption: Ventral view
Species: Hypancistrus zebra Caption: Ventral view	Species: Hypoptopoma cf. guianense Caption: Ventral view
Species: Hypoptopoma guianense Caption: Ventral view	Species: Hypoptopoma gulare Caption: Ventral view
Species: Hypoptopoma gulare Caption: Ventral view	Species: Hypoptopoma inexspectatum Caption: Ventral view
Species: Hypoptopoma sp. (4) Caption: Ventral view	Species: Hypoptopoma steindachneri Caption: Ventral view
Species: Hypoptopoma sternoptychum Caption: Ventral view	Species: Hypostomus annectens Caption: Ventral view
Species: Hypostomus argus Caption: Ventral view	Species: Hypostomus faveolus Caption: Ventral view
Species: Hypostomus jaguar Caption: Ventral view	Species: Hypostomus latifrons Caption: Ventral view
Species: Hypostomus luteus Caption: Ventral view	Species: Hypostomus luteus Caption: Ventral view
Species: Hypostomus macushi Caption: Ventral view	Species: Hypostomus niceforoi Caption: Ventral view
Species: Hypostomus oculeus Caption: Ventral view	Species: Hypostomus roseopunctatus Caption: Ventral view
Species: Hypostomus sp. `RIO PAUSHIYACO` Caption: Ventral view	Species: Kronichthys lacerta Caption: Ventral view
Species: Lamontichthys sp. `COLOMBIA` Caption: Ventral view	Species: Lasiancistrus cf. caucanus Caption: Ventral view
Species: Leporacanthicus heterodon Caption: Ventral view	Species: Leporacanthicus joselimai Caption: Ventral view
Species: Leporacanthicus sp. (L473) Caption: Ventral view	Species: Leptoancistrus sp. `ATRATO` Caption: Ventral view
Species: Limatulichthys nasarcus Caption: Ventral view	Species: Lithogenes wahari Caption: Ventral view
Species: Lithoxancistrus orinoco Caption: Ventral view	Species: Lithoxancistrus yekuana Caption: Ventral view
Species: Lithoxus bovallii Caption: Ventral view	Species: Lithoxus jantjae Caption: Ventral view
Species: Lithoxus planquettei Caption: Ventral view	Species: Loricaria birindellii Caption: Ventral view
Species: Loricaria luciae Caption: Ventral view	Species: Loricaria luciae Caption: Ventral view
Species: Loricaria lundbergi Caption: Ventral view	Species: Loricaria lundbergi Caption: Ventral view
Species: Loricaria pumila Caption: Ventral view	Species: Loricaria spinulifera Caption: Ventral view
Species: Loricariichthys anus Caption: Ventral view	Species: Micracanthicus vandragti Caption: Ventral view
Species: Neblinichthys echinasus Caption: Ventral view	Species: Otocinclus batmani Caption: Ventral view
Species: Otocinclus flexilis Caption: Ventral view	Species: Otocinclus huaorani Caption: Ventral view
Species: Otocinclus vittatus Caption: Ventral view	Species: Otothyris lophophanes Caption: Ventral view
Species: Panaqolus gnomus Caption: Ventral view	Species: Panaqolus gnomus Caption: Ventral view
Species: Panaqolus maccus Caption: Ventral view	Species: Panaqolus nix Caption: Ventral view
Species: Panaqolus sp. (1) Caption: Ventral view	Species: Panaqolus sp. (L002) Caption: Ventral view
Species: Panaqolus sp. (L169) Caption: Ventral view	Species: Panaqolus sp. (L397) Caption: Ventral view
Species: Panaqolus sp. (L397) Caption: Ventral view	Species: Panaqolus sp. (L403) Caption: Ventral view
Species: Panaqolus sp. (L458) Caption: Ventral view	Species: Panaqolus sp. (L460) Caption: Ventral view
Species: Panaqolus sp. `ACRE` Caption: Ventral view	Species: Panaque bathyphilus Caption: Ventral view
Species: Panaque cf. cochliodon`upper_magdalena` Caption: Ventral view	Species: Panaque cf. nigrolineatus Caption: Ventral view
Species: Panaque cf. nigrolineatus Caption: Ventral view	Species: Panaque schaeferi Caption: Ventral view
Species: Parancistrus aurantiacus Caption: Ventral view	Species: Pareiorhaphis bahianus Caption: Ventral view
Species: Pareiorhaphis cameroni Caption: Ventral view	Species: Pareiorhaphis scutula Caption: Ventral view
Species: Parotocinclus britskii Caption: Ventral view	Species: Parotocinclus britskii Caption: Ventral view
Species: Parotocinclus doceanus Caption: Ventral view	Species: Parotocinclus jimi Caption: Ventral view
Species: Parotocinclus maculicauda Caption: Ventral view	Species: Parotocinclus maculicauda Caption: Ventral view
Species: Parotocinclus spilosoma Caption: Ventral view	Species: Paulasquama callis Caption: Ventral view
Species: Peckoltia brevis Caption: Ventral view	Species: Peckoltia compta Caption: Ventral view
Species: Peckoltia ephippiata Caption: Ventral view	Species: Peckoltia furcata Caption: Ventral view
Species: Peckoltia greedoi Caption: Ventral view	Species: Peckoltia lujani Caption: Ventral view
Species: Peckoltia pankimpuju Caption: Ventral view	Species: Peckoltia pankimpuju Caption: Ventral view
Species: Peckoltia relictum Caption: Ventral view	Species: Peckoltia sp. (L205) Caption: Ventral view
Species: Peckoltia sp. (L288) Caption: Ventral view	Species: Peckoltia sp. `RIO NEGRO` Caption: Ventral view
Species: Peckoltia vittata Caption: Ventral view	Species: Planiloricaria cryptodon Caption: Ventral view
Species: Planiloricaria cryptodon Caption: Ventral view	Species: Pseudacanthicus cf. leopardus Caption: Ventral view
Species: Pseudacanthicus cf. spinosus Caption: Ventral view	Species: Pseudacanthicus fordii Caption: Ventral view
Species: Pseudacanthicus leopardus Caption: Ventral view	Species: Pseudacanthicus sp. (L063) Caption: Ventral view
Species: Pseudacanthicus sp. (L079) Caption: Ventral view	Species: Pseudancistrus guentheri Caption: Ventral view
Species: Pseudancistrus kayabi Caption: Ventral view	Species: Pseudancistrus kwinti Caption: Ventral view
Species: Pseudohemiodon apithanos Caption: Ventral view	Species: Pseudohemiodon sp. `AMAZONAS VENEZUELA` Caption: Ventral view
Species: Pseudohemiodon sp. `MARBLED` Caption: Ventral view	Species: Pseudohemiodon sp. `PARAGUAY` Caption: Ventral view
Species: Pseudolithoxus dumus Caption: Ventral view	Species: Pseudolithoxus kelsorum Caption: Ventral view
Species: Pseudolithoxus nicoi Caption: Ventral view	Species: Pseudorinelepis sp. (L095) Caption: Ventral view
Species: Pterygoplichthys joselimaianus Caption: Ventral view	Species: Pterygoplichthys joselimaianus Caption: Ventral view
Species: Pterygoplichthys lituratus Caption: Ventral view	Species: Pterygoplichthys scrophus Caption: Ventral view
Species: Pterygoplichthys weberi Caption: Ventral view	Species: Pterygoplichthys weberi Caption: Ventral view
Species: Pyxiloricaria menezesi Caption: Ventral view	Species: Rhinelepis strigosa Caption: Ventral view
Species: Rhinolekos britskii Caption: Ventral view	Species: Rhinolekos capetinga Caption: Ventral view
Species: Rhinolekos garavelloi Caption: Ventral view	Species: Rhinolekos schaeferi Caption: Ventral view
Species: Rineloricaria baliola Caption: Ventral view	Species: Rineloricaria cadeae Caption: Ventral view
Species: Rineloricaria felipponei Caption: Ventral view	Species: Rineloricaria heteroptera Caption: Ventral view
Species: Rineloricaria longicauda Caption: Ventral view	Species: Rineloricaria malabarbai Caption: Ventral view
Species: Rineloricaria misionera Caption: Ventral view	Species: Rineloricaria pareiacantha Caption: Ventral view
Species: Rineloricaria strigilata Caption: Ventral view	Species: Rineloricaria thrissoceps Caption: Ventral view
Species: Scobinancistrus cf. pariolispos Caption: Ventral view	Species: Soromonichthys stearleyi Caption: Ventral view
Species: Spatuloricaria caquetae Caption: Ventral view	Species: Squaliforma villarsi Caption: Ventral view
Species: Sturisoma festivum Caption: Ventral view	Species: Sturisoma kneri Caption: Ventral view
Species: Sturisoma robustum Caption: Ventral view	Species: Sturisomatichthys aureus Caption: Ventral view
Species: Sturisomatichthys caquetae Caption: Ventral view	Species: Sturisomatichthys citurensis Caption: Ventral view
Species: Sturisomatichthys tamanae Caption: Ventral view	Species: Transancistrus santarosensis Caption: Ventral view
Species: Atopochilus sp. (1) Caption: Ventral view	Species: Atopodontus adriaensi Caption: Ventral view
Species: Brachysynodontis batensoda Caption: Ventral view	Species: Chiloglanis pretoriae Caption: Ventral view
Species: Chiloglanis sp. (1) Caption: Ventral view	Species: Euchilichthys guentheri Caption: Ventral view
Species: Euchilichthys guentheri Caption: Ventral view	Species: Synodontis acanthomias Caption: Ventral view
Species: Synodontis acanthoperca Caption: Ventral view	Species: Synodontis angelicus Caption: Ventral view
Species: Synodontis annectens Caption: Ventral view	Species: Synodontis ansorgii Caption: Ventral view
Species: Synodontis dhonti Caption: Ventral view	Species: Synodontis fuelleborni Caption: Ventral view
Species: Synodontis grandiops Caption: Ventral view	Species: Synodontis granulosus Caption: Ventral view
Species: Synodontis laessoei Caption: Ventral view	Species: Synodontis macrops Caption: Ventral view
Species: Synodontis macrostigma Caption: Ventral view	Species: Synodontis macrostoma Caption: Ventral view
Species: Synodontis matthesi Caption: Ventral view	Species: Synodontis melanopterus Caption: Ventral view
Species: Synodontis nebulosus Caption: Ventral view	Species: Synodontis notatus Caption: Ventral view
Species: Synodontis petricola Caption: Ventral view	Species: Synodontis punctulatus Caption: Ventral view
Species: Synodontis resupinatus Caption: Ventral view	Species: Synodontis soloni Caption: Ventral view
Species: Synodontis sp. hybrid(1) Caption: Ventral view	Species: Synodontis steindachneri Caption: Ventral view
Species: Synodontis tessmanni Caption: Ventral view	Species: Synodontis tessmanni Caption: Ventral view
Species: Synodontis vanderwaali Caption: Ventral view	Species: Synodontis velifer Caption: Ventral view
Species: Synodontis waterloti Caption: Ventral view	Species: Synodontis woosnami Caption: Ventral view
Species: Synodontis zanzibaricus Caption: Ventral view	Species: Pimelodus fur Caption: Ventral view
Species: Pimelodus pictus Caption: Ventral view	Species: Propimelodus araguayae Caption: Ventral view
Species: Sorubim maniradii Caption: Ventral view	Species: Plotosus abbreviatus Caption: Ventral view
Species: Plotosus papuensis Caption: Ventral view	Species: Batrochoglanis transmontanus Caption: Ventral view
Species: Cruciglanis pacifici Caption: Ventral view	Species: Parailia somalensis Caption: Ventral view
Species: Schilbe uranoscopus Caption: Ventral view	Species: Kryptopterus mononema Caption: Ventral view
Species: Kryptopterus palembangensis Caption: Ventral view	Species: Ompok hypophthalmus Caption: Ventral view
Species: Ompok supernus Caption: Ventral view	Species: Pterocryptis gangelica Caption: Ventral view
Species: Pterocryptis wynaadensis Caption: Ventral view	Species: Silurichthys ligneolus Caption: Ventral view
Species: Silurus grahami Caption: Ventral view	Species: Silurus mento Caption: Ventral view
Species: Bagarius yarrelli Caption: Ventral view	Species: Caelatoglanis zonatus Caption: Ventral view
Species: Creteuchiloglanis gongshanensis Caption: Ventral view	Species: Creteuchiloglanis macropterus Caption: Ventral view
Species: Erethistoides longispinis Caption: Ventral view	Species: Erethistoides luteola Caption: Ventral view
Species: Erethistoides vescula Caption: Ventral view	Species: Exostoma berdmorei Caption: Ventral view
Species: Exostoma vinciguerrae Caption: Ventral view	Species: Glaridoglanis andersonii Caption: Ventral view
Species: Glyptothorax anamalaiensis Caption: Ventral view	Species: Glyptothorax annandalei Caption: Ventral view
Species: Glyptothorax cavia Caption: Ventral view	Species: Glyptothorax cous Caption: Ventral view
Species: Glyptothorax filicatus Caption: Ventral view	Species: Glyptothorax ketambe Caption: Ventral view
Species: Glyptothorax laosensis Caption: Ventral view	Species: Glyptothorax maceriatus Caption: Ventral view
Species: Glyptothorax malabarensis Caption: Ventral view	Species: Glyptothorax malabarensis Caption: Ventral view
Species: Glyptothorax nieuwenhuisi Caption: Ventral view	Species: Glyptothorax plectilis Caption: Ventral view
Species: Glyptothorax scrobiculus Caption: Ventral view	Species: Glyptothorax scrobiculus Caption: Ventral view
Species: Glyptothorax strabonis Caption: Ventral view	Species: Glyptothorax striatus Caption: Ventral view
Species: Gogangra viridescens Caption: Ventral view	Species: Myersglanis blythii Caption: Ventral view
Species: Oreoglanis colurus Caption: Ventral view	Species: Oreoglanis heteropogon Caption: Ventral view
Species: Oreoglanis laciniosa Caption: Ventral view	Species: Oreoglanis macroptera Caption: Ventral view
Species: Oreoglanis macroptera Caption: Ventral view	Species: Oreoglanis nakasathiani Caption: Ventral view
Species: Oreoglanis nakasathiani Caption: Ventral view	Species: Oreoglanis sudarai Caption: Ventral view
Species: Oreoglanis suraswadii Caption: Ventral view	Species: Oreoglanis tenuicauda Caption: Ventral view
Species: Oreoglanis vicina Caption: Ventral view	Species: Parachiloglanis bhutanensis Caption: Ventral view
Species: Pareuchiloglanis gracilicaudata Caption: Ventral view	Species: Pareuchiloglanis rhabdura Caption: Ventral view
Species: Pseudecheneis brachyura Caption: Ventral view	Species: Pseudecheneis brachyura Caption: Ventral view
Species: Pseudecheneis intermedius Caption: Ventral view	Species: Pseudecheneis longipectoralis Caption: Ventral view
Species: Pseudecheneis sp. (2) Caption: Ventral view	Species: Pseudecheneis sulcata Caption: Ventral view
Species: Pseudecheneis sympelvica Caption: Ventral view	Species: Pseudolaguvia austrina Caption: Ventral view
Species: Pseudolaguvia foveolata Caption: Ventral view	Species: Pseudolaguvia ribeiroi Caption: Ventral view
Species: Pseudolaguvia spicula Caption: Ventral view	Species: Pseudolaguvia virgulata Caption: Ventral view
Species: Stegophilus insidiosus Caption: Ventral view	Species: Trichomycterus bomboizanus Caption: Ventral view
Species: Trichomycterus borellii Caption: Ventral view	Species: Trichomycterus migrans Caption: Ventral view
Species: Trichomycterus romeroi Caption: Ventral view	Species: Trichomycterus spegazzinii Caption: Ventral view
Species: Trichomycterus spilosoma Caption: Ventral view	Species: Trichomycterus ytororo Caption: Ventral view
Species: Pterygoplichthys gibbiceps Caption: Ventral view (albino)	Species: Baryancistrus xanthellus Caption: Ventral view (female)
Species: Panaqolus maccus Caption: Ventral view (female)	Species: Pseudohemiodon sp. `MARBLED` Caption: Ventral view (female)
Species: Pseudacanthicus leopardus Caption: Ventral view (gravid female)	Species: Ancistrus sp. (L393) Caption: Ventral view (male)
Species: Hypancistrus furunculus Caption: Ventral view (male)	Species: Pseudohemiodon sp. `MARBLED` Caption: Ventral view (male)
Species: Ancistrus dolichopterus Caption: Ventral view - juvenile	Species: Peckoltia compta Caption: Ventral view - may be spotted or not
Species: Hypancistrus zebra Caption: Ventral view - note small mouth	Species: Hypancistrus zebra Caption: Ventral view - ten day old fry
Species: Farlowella acus Caption: Ventral view detailing belly scutes arrangement	Species: Farlowella acus Caption: Ventral view detailing belly scutes arrangement
Species: Sturisomatichthys aureus Caption: Ventral view illustrating scutes	Species: Hypancistrus sp. (L236) Caption: Ventral view of 2 cm juvenile
Species: Panaqolus albivermis Caption: Ventral view of adult	Species: Hemibagrus microphthalmus Caption: Ventral view of female
Species: Brochiloricaria chauliodon Caption: Ventral view of female	Species: Loricariichthys anus Caption: Ventral view of female
Species: Spectracanthicus zuanoni Caption: Ventral view of female	Species: Farlowella platorynchus Caption: Ventral view of fry
Species: Leporacanthicus cf. galaxias(l240) Caption: Ventral view of fry	Species: Dentectus barbarmatus Caption: Ventral view of head
Species: Hypancistrus sp. (L260) Caption: Ventral view of head	Species: Spatuloricaria sp. `RIO SAN ALEJANDRO` Caption: Ventral view of head
Species: Hemibagrus divaricatus Caption: Ventral view of holotype	Species: Hemibagrus lacustrinus Caption: Ventral view of holotype
Species: Hemibagrus semotus Caption: Ventral view of holotype	Species: Mystus zeylanicus Caption: Ventral view of holotype
Species: Ancistrus formoso Caption: Ventral view of holotype	Species: Pseudancistrus reus Caption: Ventral view of holotype
Species: Transancistrus santarosensis Caption: Ventral view of holotype	Species: Ompok karunkodu Caption: Ventral view of holotype
Species: Conta pectinata Caption: Ventral view of holotype	Species: Erethistes longissimus Caption: Ventral view of holotype
Species: Exostoma effrenum Caption: Ventral view of holotype	Species: Exostoma peregrinator Caption: Ventral view of holotype
Species: Glyptothorax decussatus Caption: Ventral view of holotype	Species: Glyptothorax famelicus Caption: Ventral view of holotype
Species: Glyptothorax forabilis Caption: Ventral view of holotype	Species: Glyptothorax keluk Caption: Ventral view of holotype
Species: Glyptothorax pictus Caption: Ventral view of holotype	Species: Glyptothorax porrectus Caption: Ventral view of holotype
Species: Glyptothorax radiolus Caption: Ventral view of holotype	Species: Gogangra laevis Caption: Ventral view of holotype
Species: Pseudolaguvia assula Caption: Ventral view of holotype	Species: Pseudolaguvia fucosa Caption: Ventral view of holotype
Species: Pseudolaguvia inornata Caption: Ventral view of holotype	Species: Pseudolaguvia nubila Caption: Ventral view of holotype
Species: Pseudolaguvia viriosa Caption: Ventral view of holotype	Species: Chiloglanis igamba Caption: Ventral view of holotype.
Species: Chiloglanis kazumbei Caption: Ventral view of holotype.	Species: Chiloglanis orthodontus Caption: Ventral view of holotype.
Species: Pseudacanthicus sp. (L320) Caption: Ventral view of juvenile	Species: Peckoltia sp. (L076) Caption: Ventral view of juveniles
Species: Brochiloricaria chauliodon Caption: Ventral view of male	Species: Panaqolus albomaculatus Caption: Ventral view of male
Species: Rineloricaria aff. latirostris Caption: Ventral view of male	Species: Spectracanthicus zuanoni Caption: Ventral view of male
Species: Sturisoma aff. festivum Caption: Ventral view of male	Species: Sturisoma aff. festivum Caption: Ventral view of male's bristles
Species: Cordylancistrus platyrhynchus Caption: Ventral view of mouth	Species: Hypostomus sp. (L087) Caption: Ventral view of mouth
Species: Pseudohemiodon sp. `PERU I` Caption: Ventral view of mouth	Species: Pareuchiloglanis cf. longicauda Caption: Ventral view of mouth
Species: Pseudomystus heokhuii Caption: Ventral view of preserved specimen	Species: Synodontis zambezensis Caption: Ventral view of preserved specimen
Species: Perrunichthys perruno Caption: Ventral view of preserved specimen	Species: Erethistes jerdoni Caption: Ventral view of skeleton
Species: Chaetostoma formosae Caption: Ventral view of upper body	Species: Farlowella paraguayensis Caption: Ventral view of upper body
Species: Hemiloricaria sp. (2) Caption: Ventral view of upper body	Species: Pseudacanthicus sp. (L343) Caption: Ventral view of upper body
Species: Pseudoloricaria laeviuscula Caption: Ventral view of upper body	Species: Pseudoloricaria laeviuscula Caption: Ventral view of upper body
Species: Spatuloricaria tuira Caption: Ventral view of upper body	Species: Rineloricaria aff. latirostris Caption: Ventral view of upper body of female
Species: Rineloricaria aff. latirostris Caption: Ventral view of upper body of male	Species: Hemiloricaria eigenmanni Caption: Ventral view showing key ID features.
Species: Pterygoplichthys disjunctivus Caption: Ventral view showing reticulated pattern	Species: Otocinclus vittatus Caption: Ventral view showing yellow eggs
Species: Pimelodus albicans Caption: Ventral view three year old - 360mm SL	Species: Panaque sp. (L191) Caption: Ventral view, 32 cm TL, unsexed
Species: Ancistrus dolichopterus Caption: Ventral view, female	Species: Hemibagrus capitulum Caption: Ventral view, holotype of Hemibagrus chrysops
Species: Pseudancistrus kwinti Caption: Ventral view, male	Species: Auchenipterichthys coracoideus Caption: Ventral view, showing shape of pectoral girdle
Species: Glyptothorax schmidti Caption: Ventral view, showing thoracic adhesive apparatus	Species: Exostoma sawmteai Caption: Ventral view.
Species: Acanthicus hystrix Caption: Ventral view. Rio Tocantins, near town of Estreito, Maranhão state, Brazil	Species: Synodontis nigriventris Caption: Zebra Kutu variant-ventral view