All FishesLoricariidaeRhinotocinclus

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Scientific Name Rhinotocinclus chromodontus  Britski & Garavello, 2007
Common Name
Type Locality Diamantino, creek no. 1, tributary of Rio Preto, on road to São Francisco, Rio Arinos drainage, about 14°18'S, 56°20'W, Mato Grosso State, Brazil.
Synonym(s) Hisonotus chromodontus
Hop to next section Species Information
Size 33mm or 1.3" 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.
Hop to next section Habitat Information
Distribution South America: Upper Rio Tapajós drainage in Brazil.
Amazon, Lower Amazon, Tapajós, Upper Tapajós (click on these areas to find other species found there)
Amazon, Lower Amazon, Tapajós, Upper Tapajós, Juruena, Arinos, Preto (Arinos, MT) (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
Hop to next section Husbandry Information
Breeding Reports There is no breeding report.
Hop to next section Further Information
Reference Brazilian Journal of Biology v. 67 (no. 3), pp 414, Figs. 1.
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Last Update 2022 Jul 10 10:18 (species record created: 2013 Jul 09 18:39)