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Leonard P. Schultz -1944 (1)

There are currently nine species in this genus which are poorly known and documented. Type species is Cetopsorhamdia nasus Eigenmann & Fisher, 1916. Description: The genus Cetopsorhamdia is documented as having the frontal fontanel small and far removed from the long parietal fontanal. The first dorsal and pectoral rays are not spinous. Bottom lobe of the caudal fin is longer and the adipose fin is three times as long as high, and its base is longer than that of the anal fin. Small to midsized genus (3-12cm). Colouration: General colour blackish above, paler below, with the pale caudal fin sharply contrasting with the black base of caudal fin; a pale bar, sometimes obscure, across occipital and down to upper end of gill openings; origin of dorsal and the area just in front blackish, sometimes behind this a small, paler blotch, then at rear base of dorsal the pigment is more intensive; body below dorsal fin base paler except a blackish diffuse oblong blotch along lateral line; a wide pale bar between dorsal across body to in front of anal, another on caudal peduncle, these pale bar pigments somewhat obscure in larger specimens; the black bar from base of caudal fin to anal is obvious; on the smaller specimens a small pale spot occurs at origin of adipose, absent on larger specimens; paired fins pale, dorsal and anal pale; snout pale; front of chin and lower jaw pigmented (Schultz, 1944). Aquarium Care: The larger species are most likely predatory of smaller fish in the aquarium as per their close relatives of the Pimelodidae family but this is a small species of only 5.5cm. SL. Remarks: Differs from the other members of the genus Cetopsorhamdia with elongate adipose fins in colour, and it is the only one of the species having the anal fin origin so far in advance of the adipose origin (Schultz, 1944).

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Heptapteridae

South America: Napo River basin in Ecuador and Orinoco River basin in Venezuela. Type locality: Río Torbes, 1 km. above Táriba, Orinoco system, Venezuela.

5.5cm (2¼ins)

24-28°C (75-83°F)

6.0-7.5.

Bockmann, F.A. and G.M. Guazzelli 2003 Heptapteridae (Heptapterids). p. 406-431. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil.
Froese, R. and D. Pauly. Editors. 2018. FishBase. World Wide Web electronic publication. www.fishbase.org, ( 02/2018 ).
Schultz, Leonard P.; The Catfishes Of Venezuela, With Descriptions Of Thirty-Eight New Forms. Proceedings of the United States National Museum v. 94 (no. 3172) Washington 1944.
Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.