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Corumbataia anosteos (Carvalho, Lehmann A. & Reis 2008) |
Image contributors to this species: |
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Tiago Carvalho (2) |
ScotCat Sources: |
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Other Sources: |
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Relevant Information: |
Corumbataia was proposed by Britski (1997) when describing Corumbataia cuestae from the Upper Paraná basin in the Rio Tietê and Corumbataia tocantinensis, from the Rio Araguaia and Rio Tocantins basins. Description: This genus was delimited by an exposed portion in the middle of the scapular bridge formed only by the coracoid; compound hypurals 1 and 2 completely fused to the compound hypurals 3-5; atrophic maxillary barbel, and anastomosis of the infraorbital and otic sensory canals over the pterotic-supracleitrum (Britski, 1997). Four species were subsequently described: C. britskii Ferreira & Ribeiro, 2007, C. veadeiros Carvalho, 2008, C. lucianoi Silva, Roxo, Souza & Oliveira, 2018 and C. liliai Silva, Roxo, Souza & Oliveira, 2018. Additionally, two species formerly described in Gymnotocinclus were transferred to Corumbataia by Roxo et al. (2019): C. anosteos (Carvalho, Lehmann & Reis, 2008) and C. canoeiro (Roxo, Silva, Ochoa & Zawadzki, 2017). This genera contains six species (2020) C. tocantinensis Britski, 1997, C. cuestae Britski, 1997, C. anosteos (Carvalho, Lehmann A. & Reis, 2008), C. britskii Ferreira & Ribeiro, 2007, C. canoeiro (Roxo, Silva, Ochoa & Zawadzki, 2017), and C. veadeiros Carvalho, 2008. They are an intermediate between the genera's, Parotocinclus and Otocinclus and don't posses an adipose fin. and the body is stockier than these two previous genera. Colouration: Corumbataia species have a dark band along the body. Sexual Differences: Males with urogenital papilla just behind the anal opening. Adult males have a fleshy flap along the dorsal margin of the pelvic-fin thickened ray, which is wider basally and progressively narrowing distally. The flap is absent in juveniles and females. Aquarium Care: Quite problematic to keep due to having to facilitate a flow current in the water. Diet: Aufwuch feeder with the usual aquarium fare of flake and tablet foods. Etymology: The genus name Corumbataia: –ia (L. suffix), belonging to: Rio Corumbataí, São Paulo, Brazil, type locality of type species, C. cuestae. The specific name anosteos: From the Greek "anosteos", meaning boneless, in allusion to the absence of the lateral connecting bone. Remarks: This species is still found on some online searches as its synonym, Gymnotocinclus anosteos. |
Common Name: |
Naked Oto |
Synonyms: |
Gymnotocinclus anosteos |
Family: |
Loricariidae |
Distribution: |
South America: Known only from two creeks, both tributaries to the Rio Tocantinzinho, in the headwaters of the Rio Tocantins basin, Goiás, Brazil. |
Size: |
4.5cm. (1¾ins) |
Temp: |
26-30°c (77-75°f.) |
p.H. |
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6.0-7.0. |
IUCN Red List |
Gymnotocinclus anosteos (now Corumbataia anosteos) is endemic to Brazil and known from some headwaters of two tributaries of the Tocantinzinho River and the Paranã River, both part of the Tocantins River drainage. Although the species is infrequent and not very abundant in its distribution area, no direct threats to its population have been identified. Therefore, Gymnotocinclus (Corumbataia) anosteos has been categorised as Least Concern (LC), (IUCN 2022). |
Reference: |
Carvalho,
T. P., P. Lehmann A. and R. E. Reis 2008. Gymnotocinclus
anosteos, a new uniquely-plated genus and species
of loricariid catfish (Teleostei: Siluriformes) from
the upper rio Tocantins basin, central Brazil. Neotropical
Ichthyology v. 6 (no. 3): 329-338. |
Family: Loricariidae Back to Ident-A-Cat Click on Thumbnails |
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 Corumbataia
anosteos |
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