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Corydoras ourastigma Nijssen, 1972

Image contributors to this species:

Adrian Payne (1) Ivor Hilton (1)

ScotCat Sources:

Other Sources:

Relevant Information:

This species is sympatric with lineage 9 species Hoplisoma simile and lineage 8 species Brochis sp. (C066). Corydoras sp. (CW118) is the same variable species. There is another look-a-like from the State of Rondônia which has a different head shape and the position of the caudal blotch. Lineage: Placed in Lineage 1. When there is a revision they will stay as Corydoras (Lacépède, 1803) with the type species of C. geoffroy La Cépède, 1803. As of the latest update (Dias et al 2024), Corydoras ourastigma has been placed in Lineage 1 and has retained the genus name of Corydoras. Aquarium Care: As per this genus, housed with non aggressive species or a species tank. Buy at least 6 as they will stay together in the tank which will make them feel more comfortable in their surroundings. Diet: As per this genus with a good quality flake food, tablet, frozen and small worm foods. Etymology: The specific name ourastigma: With a spot on the tail.

Common Name:

None

Synonyms:

None

Family:

Callichthyidae

Distribution:

South America: Brazil; Purus River basin, middle Amazon system. Type locality: Brazil, Est. Acre, Rio Iquiri (= Rio Ituxi) at road Rio Branco village —Abuna, 47 kilometers from Rio Branco village (about 10º00'S, 67º30'W), Purus River system.

Size:

Male: 6.0 cm (2¼ins) Female: 6.5cm (2¾ins)

Temp:

23-26°C (73-79°F)

p.H.

6.0-7.2.

IUCN Red List

Corydoras ourastigma is endemic to Brazil and known from the Purus River basin and the middle Amazon River basin (Amazonas state). The species has also been recorded in the Crespo River (Rondônia state) and the Iquiri River (Acre state). The species appears to be frequent and naturally abundant. As no plausible threats were identified, C. ourastigma was categorized as Least Concern (LC), (IUCN 2022).

Reference:

Alexandrou, Markos & Taylor, Martin. (2011). Evolution, ecology and taxonomy of the Corydoradinae revisited.
Angelica C Dias, Luiz F C Tencatt, Fabio F Roxo, Gabriel de Souza da Costa Silva, Sérgio A Santos, Marcelo R Britto, Martin I Taylor, Claudio Oliveira, Phylogenomic analyses in the complex Neotropical subfamily Corydoradinae (Siluriformes: Callichthyidae) with a new classification based on morphological and molecular data, Zoological Journal of the Linnean Society, 2024;, zlae053.
Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Fuller, I.A.M. & Evers, H-G: 2005 Identifying Corydoradinae Catfish 384 p.
Ian A. M. Fuller & Hans-Georg Evers (2011). Identifying Corydoradinae Catfish Supplement 1. Ian Fuller Enterprises.
Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) 2022. Corydoras ourastigma. The IUCN Red List of Threatened Species 2022.

Family: Callichthyidae Back to Ident-A-Cat Click on Thumbnails

Corydoras ourastigma

Corydoras ourastigma

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