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Gastrodermus undulatus Regan, 1912

Image contributors to this species:

C.H.Bishop (5) Ian Fuller (1) Allan James (1) Vedran Cuncic (1) Enzo Edgardo Ferreyra (1)

ScotCat Sources:

Other Sources:

Relevant Information:

The fish in the first first 5 images were collected by the image contributor Carlos Bishop in the Corrientes province of N.E. Argentina near the Paraguayan border. They were caught in densely planted areas with a gravel bottom, the water was quite limpid and they are always living alongside C. aeneus and C. paleatus. In the winter the water temperature gets down to between 10 to11ºC (47-49ºf) and even as low as 7 to 8ºC (39-43ºf). Seemingly wild hybrids with C. aeneus are very common. There is a similar looking species from the Mato Grosso in Brazil which has been given the C-number code of C088. Lineage: Part of the so called "Elegans Group" which would place it in Lineage 5 and a revision in the future could involve the resurrection of the genus name Gastrodermus (Cope, 1878). As of the latest update Corydoras undulatus has now been placed in Lineage 5 and has the new genus name of Gastrodermus (2024). Aquarium Care: This is akin to most of this genus, very peaceful, and would be best housed with small to medium tank mates such as Tetras, Rasboras and Danios or in a species tank for breeding purposes. Diet: A good quality flake food and tablet food for adults with sporadic feedings of frozen or live food will keep your Corydoras/Gastrodermus in good health. Etymology: The specific name undulatus: wavy, referring to “dark purplish spots tending to run together, forming undulating longitudinal bands”. Remarks: Lower temperatures in the aquarium will be beneficial to this species. CW022 has now been redescribed as being a colour form of G. undulatus (Bono A. et al. 2019). Still found on some online sources as Corydoras undulatus.

Common Name:

CW022

Synonyms:

Corydoras undulatus

Family:

Callichthyidae

Distribution:

South America: Argentina; Paraná River Basin, Buenos Aires, La Plata.

Size:

Male: 5.0cm (2ins) Female: 5.5cm (2¼ins)

Temp:

20-25°C (67 -77°F)

p.H.

6.0-7.2.

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.
Bono A, Caserta Tencatt LF, Alonso F, Lehmann A. P (2019) Redescription of Corydoras undulatus Regan, 1912 (Siluriformes: Callichthyidae), with comments on the identity of Corydoras latus Pearson, 1924.
Fuller, I.A.M. & Evers, H-G: 2005 Identifying Corydoradinae Catfish 384 p.

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

Gastrodermus undulatus

Gastrodermus undulatus
Pair-male on branch

Gastrodermus undulatus

Gastrodermus undulatus
Pair-female to right

Gastrodermus undulatus
Male

Gastrodermus undulatus

Gastrodermus undulatus
Yapeyú, Corrientes Province, Argentina

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