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Cetopsidium pemon Vari, Ferraris & de Pinna, 2005

Image contributors to this species:

Mark Sabaj Pérez (1)

ScotCat Sources:

Etymology = Genus Etymology = Species

Other Sources:

Fishbase  Google Search  All Catfish Species Inventory


Relevant Information:

Dorsal soft rays (total): 5 - 6; Anal soft rays: 21 - 26; Vertebrae: 37 - 41. The combination of the presence of a dorsal fin with an ossified spinelet and the presence of pectoral and dorsal-fin spines distinguishes the species of Cetopsidium from all other genera in the Cetopsinae. The possession of a lateral line extending to over the posterior portion of the base of the anal fin but falling short of the caudal peduncle is also unique to Cetopsidium within the Cetopsinae. Sexual dimorphism. Presumed mature males of Cetopsidium pemon have the first ray of the dorsal and pectoral fins extending past the fin margin as a distinct filament contrary to the absence of such a prolongation on these rays in females and immature males. Mature males of the species also have the anal-fin margin broadly convex rather than straight as in females and immature males.

Common Name:







South America: Caroni, Caura and Meta river basins, Venezuela and Colombia, Branco River, Brazil. Type locality: Venezuela. Bolivar: Río Caroni, at mouth of Río Claro (7º54'45"N, 63º02'35"W).


4.5cm. (1¾ins)


22-28°c (71-83°f )




Vari, R.P., C.J. Ferraris, Jr. and M.C.C. de Pinna 2005 The neotropical whale catfishes (Siluriformes: Cetopsidae: Cetopsinae), a revisionary study. Neotrop. Ichthyol. 3(2):127-238.
Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.



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