Cetopsis
plumbea Steindachner, 1882 |
| |
| Image
contributors to this species: |
| Mark
Sabaj Pérez (1) |
| ScotCat
Sources: |
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| Other
Sources: |
  
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| Relevant
Information: |
The combination of the
absence of a spinelet associated with the dorsal fin, the absence
of spines on the dorsal and pectoral fins, and the possession of
a single row of teeth on the vomer distinguishes Cetopsis
from the other genera in the Cetopsinae. Sexual dimorphism:
The presumed males of Cetopsis plumbea have a
distal filament on the first ray of the dorsal fin. That filament
is absent in females and immature males of the species. Mature males
also have the filament on the first pectoral-fin ray proportionally
more elongate than the extension of the ray present in conspecific
females and immature males. Mature males have an anal-fin margin
that is distinctly convex contrary to the straight anal-fin margin
that is characteristic of females and immature males of the species.
Feeds on a variety of terrestrial and aquatic insects. It inhabits
streams with moderate current and a depth of up to 1 m, occurring
within such streams in areas over sand substrates but lacking vegetation.
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| Common
Name: |
None |
| Synonyms: |
Cetopsis plumbeus,
Cetopsis macroteronema, Hemicetopsis plumbeus, Pseudocetopsis macropteronema,
Pseudocetopsis macroteronema, Pseudocetopsis plumbea, Pseudocetopsis
plumbeus. |
| Family: |
Cetopsidaeycipitidae |
| Distribution: |
South
America: Upper Amazon River basin, Ecuador and Peru. Type
locality: Canelos (Ecuador). |
| Size:
|
11.5cm.
(4½ins) |
| 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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