Cat-eLog Right Arrow Loricariidae Right Arrow Hypoptopomatinae Right Arrow Otocinclus

Jump to next section Cat-eLog Data Sheet
Scientific NameOtocinclus macrospilus  Eigenmann & Allen, 1942
Common NamesDwarf Otocinclus
Dwarf Sucker, Oto
Type LocalityRío Morona, Upper Amazon, Dpto Loreto, Peru.
Pronunciationauto SINK luss - MAK ro spill us
EtymologyGreek, ous, oto = ear + Latin, cinclus = latticework; in allusion to the holes of the head in the ears. 
Jump to next section Species Information
Size 34mm or 1.3" SL. Find near, nearer or same sized spp.
IdentificationSimilar in overall colouration to O. vestitus. The caudal fin marking is key to separating this species of Otocinclus from the others. In O. macrospilus the lateral black stripe stops or becomes pale before the tail blotch, which can look like a fat spindle or diamond as it crosses into the tail proper.
SexingFemales are larger and broader especially when viewed from above.
Jump to next section Habitat Information
DistributionUpper Amazon Basin of Colombia, Ecuador & Peru
Amazon, Upper Amazon (click on these areas to find other species found there)
Show it on a map (Click the map-icon to show/hide map of species distribution)
pH5.5 - 7.5
Temperature21.0-26.0°C or 69.8-78.8°F (Show species within this range)
Jump to next section Husbandry Information
FeedingInitially algae, add a shoal to an ''algaefied'' tank and then supplement diet with sinking tablets and the usual cucumbers / lettuce or courgette (zucchini).
FurnitureLarge leafed plants and vertical flat rock surfaces (especially slate). Not essential, but likes bogwood and a large rounded substrate. Live plants seem essential to the long term survival of this fish.
Suggested TankmatesKeep in groups (preferably at least six) with any small to mid-sized community fish.
BreedingSee Shane's World Article
Jump to next section Further Information
ReferencesFishes West. S. America - pp201 - Pl. 13 (fig. 1)
Registered Keepers(1) mummymonkey (k: 6), (2) CatBrat, (3) jschwab, (4) JJP2, (5) Blue (k: 5), (6) henkhugo, (7) fred0, (8) greigzee (k: 12), (9) dracoz, (10) bony plates (k: 4), (11) anninen, (12) glenny (k: 3), (13) alyosha, (14) ash104a (k: 7), (15) DutchFry (k: 2), (16) jb92 (k: 10), (17) mante-religieuse, (18) JDogg, (19) CatsandFish (k: 2), (20) coppernite (k: 3), (21) vernonlarge (k: 5), (22) JohnB (k: 10), (23) antonm, (24) otoguppylover, (25) Komolaj1 (k: 3), (26) ayrtoninst (k: 11), (27) jacobhayes79 (k: 3), (28) Gerard Pennards (k: 3), (29) Wallace (k: 6), (30) crkinney, (31) snowflake311, (32) KittyKat, (33) Mike_Noren (k: 5), (34) jp11biod, (35) Coriequest (k: 2), who also notes: "One fry observed", (36) flipperfeet (k: 6), (37) timipi (k: 6), (38) mpekas (k: 5), (39) Sam (k: 2), (40) Shazray, (41) davidcook3, (42) knockout (k: 3), (43) CarlDeller (k: 2), (44) Tau, (45) TigerPleco2014, (46) safrane, (47) lochness, (48) Tamari, (49) bephoto (k: 3), (50) Yo-han, (51) MattHunt (k: 2), who also notes: "Despite going into mature well planted tanks, definitely need veg or algae wafers every 2-3 days as a supplement. Veg often left in for 48 hours to ensure they have an adequate fee.", (52) parrot1974 (k: 6), (53) JoWhiteFox (k: 6), (54) OregonOutdoorsChris (p: 2, k: 28), who also notes: "Tend to like tubifex worms over other foods. Maybe otos need more protein in their diets than we otherwise think.", (55) PaperDoves (k: 7), (56) Lisa C.

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Breeding ReportsNone.
Article - Shane's World Catfishology Otocinclus - ''Little Monkeys'' in the planted aquarium
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Last Update2013 Jul 24 11:23 (species record created: 2001 Apr 14 00:00)