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Chaetostoma carrioni (Norman, 1935)

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Description: When Chaetostoma carrioni was first described, by J.R. Norman in 1935, it was placed in its own genus – Lipopterichthys – based on its lack of adipose and anal fins. As these two individuals from the same locality in Ecuador's Zamora-Santiago drainage illustrate, however, these characteristics are variable within the species, with most individuals showing some degree of fin reduction, but only a few completely lacking both fins. The genus Lipopterichthys continued to be recognised as recently as 2014, but a 2015 redescription of the species and molecular phylogeny of Chaetostoma by myself and colleagues provided robust evidence for its nested position within this genus. Indeed, it is closely related to the sympatric and similar (but fully-finned) species Chaetostoma microps (Lujan 2021). Aquarium Care: The Chaetostoma species are not the easiest to maintain as the mountain stream species will need a water current to provide oxygen-rich water. The species that are exported usually originate from warmer waters so are a bit easier to keep than the mountain stream variety. Diet: Great algae eater, but you will have to subsidise this food with algae wafers and vegetable foods such as cucumber, zucchini and lettuce. Will also except tablet and worm foods. Sexual Differences: Males have better colour, a broader head and lips and adult males possess longer ventral fins than the females. Remarks: Still listed in Fishbase as the synonym, Lipopterichthys carrioni.

Common Name:

None

Synonyms:

Lipopterichthys carrioni

Family:

Loricariidae

Distribution:

South America: Marañon River basin, Ecuador. Type locality: The Zamora River, near Loja, Ecuador.

Size:

8.0cm. (3¼ins)

Temp:

20-22°c (67-71°f.)

p.H.

6.0-7.5.

Reference:

Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Lujan, N.K., Meza-Vargas, V., Astudillo-Clavijo, V., Barriga-Salazar, R. & López-Fernández, H. (2015): A Multilocus Molecular Phylogeny for Chaetostoma Clade Genera and Species with a Review of Chaetostoma (Siluriformes: Loricariidae) from the Central Andes. Copeia, 103 (3): 664-701.
Lujan, Nathan. Facebook post 2021.
Seidel, I. 2008. Back to Nature guide to L-catfishes, Ettlingen, Germany 208 p.

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

Chaetostoma carrioni
Lateral view-absent adipose fin

Chaetostoma carrioni
Dorsal view-absent adipose fin

Chaetostoma carrioni
Lateral view-adipose fin present

Chaetostoma carrioni
Dorsal view-adipose fin present

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