Corumbataia

Corumbataia is a genus of armored catfishes native to South America where they are only known from Brazil.

Corumbataia
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Loricariidae
Tribe: Otothyrini
Genus: Corumbataia
Britski, 1997
Type species
Corumbataia cuestae
Britski, 1997

Species

There are currently six recognized species in this genus:[1]

Description

These species range in size from about 2.7–3.8 centimetres (1.1–1.5 in) SL.[1]

C. cuestae and C. tocantinensis were described to be differentiated by counts of premaxillary and dentary teeth. However, they also differ in color pattern, as the unbranched caudal fin rays of C. britskii and C. tocantinensis lack the striped pattern present in C. cuestae.[2]

Corumbataia species exhibit sexual dimorphism. Males differ from females by presenting a developed urogenital papillae posterior to the anus, a skin fold at the dorsal portion of the pelvic fin spine, and a much longer pelvic fin spine that extends over the first anal fin ray. In C. britskii, males also differ from females by having four white blotches on the caudal fin, two at the dorsal lobe and two at the ventral lobe. Females, on the other hand, present only two white blotches, one on each lobe.[2]

References
  1. Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Corumbataia in FishBase. December 2011 version.
  2. Ferreira, Katiane M.; Ribeiro, Alexandre C. (2007). "Corumbataia britskii (Siluriformes: Loricariidae: Hypoptopomatinae) a new species from the upper Rio Paraná basin, Mato Grosso do Sul, Central Brazil" (PDF). Zootaxa. 1386: 59–68. doi:10.11646/zootaxa.1386.1.7.
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