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Cetopsorhamdia phantasia Stewart, 1985

Image contributors to this species:

Adrian Taylor (5)

ScotCat Sources:

Other Sources:

Relevant Information:

There are currently nine species in this genus which are poorly known and documented. Type species is Cetopsorhamdia nasus Eigenmann & Fisher, 1916. Description: Dorsal spines (total): 0; Dorsal soft rays (total): 11; Anal spines: 0; Anal soft rays: 9 - 11; Vertebrae: 37. Flexible, unbranched first ray and ten branched rays on its dorsal fin; dorsal fin situated relatively far posteriorly; pterygiophore of anterior dorsal fin ray articulating with neural spine of tenth vertebra; blade like neural spines of vertebrae five through nine extend dorsally, diverging at their dorsal ends to form a double row of ossifications just ventral to skin between supraoccipital and dorsal fin origin; a slender supraneural at posterior end of this v-shaped predorsal trough has attached muscles extending anteriorly between bifid neural spines to supraoccipital; maxillary barbel very long , reaching posteriorly beyond anal fin base. Distal portions of dorsal, adipose and anal fins, and most part of caudal fin almost unpigmented. 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. Aquarium Care: Small to midsized genus (3-12cm). The larger species are most likely predatory of smaller fish in the aquarium as per their close relatives of the Pimelodidae family. Remarks: Evers & Seidel (2005) captured this species as a bycatch when collecting Oxyropis sp. in the central and lower portions of the Rio Tapajos in Brazil.

Common Name:

None

Synonyms:

None

Family:

Heptapteridae

Distribution:

South America: Napo River basin, Ecuador.

Size:

4.0cm (1½ins)

Temp:

24-28°C (75-83°F)

p.H.

6.0-7.5.

Reference:

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.
Burgess, W.E. 1989 An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City, New Jersey (USA). 784 p
Froese, R. and D. Pauly. Editors. 2009. FishBase. World Wide Web electronic publication. www.fishbase.org, version (05/2012).

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

Cetopsorhamdia phantasia
Female

Cetopsorhamdia phantasia
Male

Cetopsorhamdia phantasia
Pair-male to right

Cetopsorhamdia phantasia
Pair-male to left

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