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|All Fishes Data Sheet|
|Scientific Name||Rhinotocinclus polyochrus Schaefer, 1988|
|Type Locality||Río Mawarinuma tributary at Neblina base camp, Territory Federal Amazonas, Venezuela, 0°55'N, 66°10'W, elevation 120 meters.|
|Size||30mm or 1.2" SL. Find near, nearer or same sized spp.|
|Identification||Rhinotocinclus is diagnosed from all other genera in Hypoptopomatinae by having the canal cheek plate on the ventral surface of the head posteriorly elongated and contacting the cleithrum (vs. canal cheek plate rounded or mesially elongated and not expanded backwards to contact the pectoral girdle).|
|Sexing||Males possess a urogenital papilla immediately behind the anus, and a variably deep skin fold along the first, unbranched pelvic-fin ray (vs. both absent in females). Also, males possess a much larger nostril than females, causing the internarial distance to be smaller in males. The larger size of the olfactory organ of males also causes an elevation in the snout profile immediately in front of the eyes, which can be easily seen in lateral view. In most species, males also possess longer pelvic fins than females, with the males' pelvic fins reaching or almost reach to the anal-fin origin.|
|Distribution||South America: upper Negro River basin.
Amazon, Middle Amazon (Solimoes), Negro, Upper Negro (click on these areas to find other species found there)
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|IUCN Red List Category||Not Evaluated|
|Breeding Reports||There is no breeding report.|
|Reference||Copeia 1988 (no. 1), pp 184, Figs. 1-2|
|Registered Keepers||Keeping this species? Why not .
There is no registered keeper.
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There is no wish to keep this species.
|Spotters||Spotted this species somewhere? Click the binoculars!
There is no record of this fish being seen.
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|Last Update||2022 Jul 10 10:50 (species record created: 2013 Aug 28 13:32)|