Cetopsidium
pemon Vari, Ferraris & de Pinna, 2005
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| Image
contributors to this species: |
| Mark
Sabaj Pérez (1) |
| ScotCat
Sources: |
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| Other
Sources: |
  
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| 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: |
None |
| Synonyms: |
None |
| Family: |
Cetopsidaeycipitidae |
| Distribution: |
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). |
| Size:
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4.5cm.
(1¾ins) |
| Temp: |
22-28°c
(71-83°f ) |
| p.H. |
6.0-7.0. |
| Reference: |
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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