All FishesLORICARIIDAERhinotocinclus  |  | 

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Scientific NameRhinotocinclus eppleyi    (Schaefer & Provenzano, 1993)
Common Name
Type LocalityCaño Curicurito, about 1 kilometer above its mouth into the Río Autana, Estado Amazonas, Venezuela, 4°47'N, 67°25'W.
Synonym(s)Parotocinclus eppleyi
EtymologyRhinotocinclus is a combination of the Greek Rhinos meaning beak or snout and Otocinclus, a genus of Hypoptopomatinae, in allusion to the conspicuous and elegant snout of most of its species. Lorica, Loricare = cuirass of corslet of leather (a suit of armour made of leather).
Hop to next section Species Information
Size30mm or 1.2" SL. Find near, nearer or same sized spp.
IdentificationRhinotocinclus 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).

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).
SexingMales 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.

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.
Hop to next section Habitat Information
DistributionSouth America
Orinoco, Upper Orinoco (click on these areas to find other species found there)
Orinoco, Middle Orinoco (click on these areas to find other species found there)

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IUCN Red List Category
Not Evaluated
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Breeding ReportsThere is no breeding report.
Hop to next section Further Information
ReferenceIchthyological Exploration of Freshwaters v. 4 (no. 1), pp 46, Figs. 5-6
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Last UpdateSat Dec 25, 2010 10:17 am (Species record created: Thu Jan 01, 1970 1:00 am)