Cat-eLog Right Arrow Loricariidae Right Arrow Hypoptopomatinae Right Arrow Parotocinclus

Jump to next section Cat-eLog Data Sheet
Scientific Name Parotocinclus jacumirim  , 2020
Common Name
Type Locality Brazil, Bahia State, Dias d’Ávila, rio Jacumirim, tributary of rio Jacuípe, on road BA-093 between municipalities of Dias d’Ávila and Mata de São João, 12°34’59.3”S 38°18’59.6”W.
Pronunciation parr auto SINK luss
Etymology Parotocinclus: Greek, para in the side of + greek, ous, otis = ear + Greek, kygklos, ou = a fish. Named after the rio Jacumirim, the type locality and the only river where the species is known up to date. The specific name, jacumirim, from the Tupi indigenous language “Jacu” from “Jacuípe”, meaning the river of jacús, a species of bird, and “mirim”, meaning small. A noun in apposition.
Jump to next section Species Information
Size 48mm or 1.9" SL. Find near, nearer or same sized spp.
Identification The genus Parotocinclus can readily be distinguished from Otocinclus by the presence of an adipose fin in the former.

Parotocinclus jacumirim is distinguished from its congeners, except P. bidentatus, P. cabessadecuia, P. dani, P. halbothi, P. muriaensis, P. pentakelis, P. seridoensis, and P. spilurus, by the possession of a reduced adipose fin, restricted to the adipose-fin spine (vs. adipose fin completely developed). The new species differs from P. bidentatus, P. halbothi, and P. muriaensis by lacking unicuspid accessory teeth (vs. unicuspid accessory teeth present), from P. bidentatus, P. cabessadecuia, P. dani, P. muriaensis, P. pentakelis, and P. spilurus by possessing broad naked abdominal areas between lateral and medial patches of plates (vs. abdomen without broad naked areas, covered by small or large platelets); and from P. seridoensis by having the snout tip completely covered by plates and odontodes (vs. naked area at snout tip).
Sexing Mature males have urogenital papilla positioned immediately posterior to the anal opening, a structure absent in females. Males also differ from females by having longer pelvic fin, with tip of first unbranched ray ending posteriorly to the anal-fin origin, and by the presence of a skin flap along the dorsal portion of the first unbranched pelvic-fin ray. In females, the pelvic fin ends anteriorly or close to the anal-fin origin and there is no skin flap on the first pelvic-fin ray. Additionally, males of P. jacumirim have the posterior nostril aperture approximately two times broader than females.
General Remarks Color in life. Pattern of dark bars and stripes in freshly collected specimens similar to preserved specimens, although somewhat less evident, and clear brown background color.
Jump to next section Habitat Information
Distribution South America: Rio Jacumirim, a tributary of the rio Jacuípe, anl independent drainage situated in Bahia State.
Bahia State Rivers, Jacuípe, Jacumirim (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
Jump to next section Husbandry Information
Furniture The sampled river stretch is approximately one meter wide, varying from a few centimeters up to one meter deep, characterized by having fast water flow, substrate formed mainly by peebles, sand and organic debris, and marginal vegetation with dense grass bushes, sparse trees, and palm trees.
Compatibility Parotocinclus jacumirim was collected syntopically with Atyanax aff. fasciatus Cuvier, Poecilia reticulata Peters, and a species of Rhamdia Bleeker.
Breeding Reports There is no breeding report.
Jump to next section Further Information
Reference Silva-Junior DE, Ramos TP, Zanata AM. (2020). Neotrop Ichthyol., 18(2): e190137.
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Last Update 2020 Jun 20 23:38 (species record created: 2015 May 23 12:56)