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Species: Microglanis cottoides
Caption: UFRGS 20930, Biguacu basin, Antonio Carlos, SC, Brazil
Species: Microglanis cottoides
Caption: UFRGS 20930, Biguacu basin, Antonio Carlos, SC, Brazil. Dorsal view
Species: Corydoras(ln9) benattii
Caption: Under water
Species: Pseudancistrus sidereus
Caption: Underside of caudal peduncle
Species: Goeldiella eques
Caption: Underside of head
Species: Megalancistrus sp. (L234)
Caption: Underside of head showing everted spines
Species: Pylodictis olivaris
Caption: Underwater
Species: Pylodictis olivaris
Caption: Underwater
Species: Chaetostoma sp. (L335)
Caption: Underwater
Species: Guyanancistrus brevispinis
Caption: Underwater
Species: Panaqolus tankei
Caption: Underwater
Species: Panaque nigrolineatus
Caption: Underwater
Species: Rineloricaria sp. (L042)
Caption: Underwater
Species: Rineloricaria sp. (L042)
Caption: Underwater
Species: Cnidoglanis macrocephalus
Caption: Underwater
Species: Hisonotus sp. `RIO XINGU`
Caption: Underwater - Rio Xingu
Species: Hypostomus sp. (L087)
Caption: Underwater - Rio Xingu
Species: Aphanotorulus emarginatus
Caption: Underwater - Rio Xingu (Vitoria)
Species: Corydoras(ln6) carlae
Caption: Underwater biotope
Species: Bagrus meridionalis
Caption: Underwater habitat: Lake Malawi
Species: Baryancistrus sp. `BELO MONTE`
Caption: Underwater in habitat
Species: Baryancistrus sp. `BELO MONTE`
Caption: Underwater in habitat
Species: Parancistrus nudiventris
Caption: Underwater in habitat
Species: Spectracanthicus punctatissimus
Caption: Underwater in habitat
Species: Spectracanthicus punctatissimus
Caption: Underwater in habitat (sport var.) L016
Species: Centromochlus schultzi
Caption: Underwater in Rio Xingu habitat
Species: Baryancistrus xanthellus
Caption: Underwater in Rio Xingu habitat
Species: Amaralia oviraptor
Caption: Underwater Rio da Prata, Mato Grosso do Sul,Brazil
Species: Rhamdia laticauda
Caption: Underwater shot - Cenote Azul nr Cancun, Mexico
Species: Rhamdia laticauda
Caption: Underwater shot - Cenote Azul nr Cancun, Mexico
Species: Bagrus meridionalis
Caption: Underwater shot of Male and offspring
Species: Baryancistrus sp. `BELO MONTE`
Caption: Underwater: Adult male
Species: Rhamdia laticauda
Caption: Underwater: Gran Cenote (West of Tulum, Mexico)
Species: Rhamdia laticauda
Caption: Underwater: Gran Cenote (West of Tulum, Mexico)
Species: Clarias gariepinus
Caption: Underwater: Lake Malawi
Species: Hemibagrus spilopterus
Caption: Underwater: Rajaprabha artificial lake
Species: Hemibagrus spilopterus
Caption: Underwater: Rajaprabha artificial lake
Species: Hemibagrus spilopterus
Caption: Underwater: Rajaprabha artificial lake, Thailand
Species: Ancistrus sp. `NHAMUNDA`
Caption: Underwater: Rio Nhamundá, Brazil
Species: Hypancistrus sp. (L475)
Caption: Underwater: Rio Nhamundá, Brazil
Species: Leporacanthicus galaxias
Caption: Underwater: Rio Nhamundá, Brazil
Species: Peckoltia sp. (L477)
Caption: Underwater: Rio Nhamundá, Brazil
Species: Ameiurus melas
Caption: Unicorn Lake, MD
Species: Ameiurus melas
Caption: Unicorn Lake, MD
Species: Pseudacanthicus sp. (L406)
Caption: Unique camouflage appears to be on all P. histrix
Species: Hypancistrus lunaorum
Caption: Unspotted variant
Species: Hypancistrus lunaorum
Caption: Unspotted variant
Species: Hypancistrus lunaorum
Caption: Unspotted variant
Species: Hypancistrus lunaorum
Caption: Unspotted variant
Species: Platydoras armatulus
Caption: Upper Amazon (Iquitos)
Species: Glyptothorax trilineatus
Caption: Upper Irrawady
Species: Pachypterus khavalchor
Caption: Upper jaw w/ blunt teeth; lower jaw w/ sharp teeth
Species: Pimelodella cristata
Caption: Upper Nickerie River
Species: Zaireichthys maravensis
Caption: Upper reaches of Bua River, Malawi
Species: Centromochlus schultzi
Caption: Upper Rio Negro, Brazil
Species: Tetranematichthys wallacei
Caption: Upper Rio Negro, Brazil
Species: Trachelyichthys decaradiatus
Caption: Upper Rio Negro, Brazil
Species: Aspidoras pauciradiatus
Caption: Upper Rio Negro, Brazil
Species: Anduzedoras oxyrhynchus
Caption: Upper Rio Negro, Brazil
Species: Astrodoras asterifrons
Caption: Upper Rio Negro, Brazil
Species: Astrodoras asterifrons
Caption: Upper Rio Negro, Brazil
Species: Platydoras hancockii
Caption: Upper Rio Negro, Brazil
Species: Ancistrus dolichopterus
Caption: Upper Rio Negro, Brazil
Species: Ancistrus dolichopterus
Caption: Upper Rio Negro, Brazil
Species: Dekeyseria scaphirhynchus
Caption: Upper Rio Negro, Brazil
Species: Pimelodus blochii
Caption: Upper Rio Negro, Brazil
Species: Bagarius sp. `SALWEEN`
Caption: Upper Salween River
Species: Ancistrus martini
Caption: Upper Zulia River. Photo by Gustavo Ballen.
Species: Pimelodus maculatus
Caption: Uruguay
Species: Hemiancistrus punctulatus
Caption: Uruguay, Cerro Largo Dept, Paso Sarandi, Arroyo