Cetopsis
Cetopsis | |
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Cetopsis plumbea | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Siluriformes |
Family: | Cetopsidae |
Subfamily: | Cetopsinae
|
Genus: | Cetopsis Agassiz, 1829 |
Type species | |
Silurus coecutiens Lichtenstein, 1819
| |
Species | |
See text. | |
Synonyms | |
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Cetopsis is a genus of catfishes (order Siluriformes) of the family Cetopsidae.
Taxonomy
Cetopsis is one of four genera in the subfamily Cetopsinae within the family Cetopsidae.[1] Cetopsis is greatly expanded from when it only included C. coecutiens. A number of genera were synonymized with Cetopsis to retain monophyly of cetopsine genera without erecting many new ones.[1]
Information on some species is limited due to lack of specimens. C. caiapo, C. jurubidae, C. sarcodes, and C. umbrosa are only known from a single specimen each, C. starnesi is only known from two specimens, C. parma is only known from four, and C. sandrae from only six specimens.[1]
Distribution
Cetopsis species are found in major freshwater rivers draining to the east and west of South America, including the Amazon, Atrato, Madeira, Magdalena, Orinoco, Tocantins, and other rivers in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela.[1]
Description
Cetopsis is distinguished from the other genera in the
Like most other members of the subfamily Cetopsinae, mature males in most species have the distal ends of the first rays of the dorsal and pectoral fins elongated into filaments and a convex (vs. straight) margin to the
Colour patterns vary between species. C. amphiloxa has very small spots on the dorsal and lateral surfaces of the body, while C. montana, C. plumbea, C. starnesi, and C. umbrosa have eye-sized spots on the lateral surfaces of the body. C. arcana, C. caiapo, C. orinoco, C. parma, C. sarcodes have a dark humeral spot (a spot in the shoulder region). C. arcana, C. montana, C. pearsoni, C. sandrae, C. starnesi, and C. umbrosa have a posteriorly rounded, variably developed, bilobed patch of dark pigmentation at the base of the caudal fin. C. fimbriata have a band of dark pigmentation along the distal portions of the anal fin. C. motatanensis has a caudal fin darkly pigmented throughout other than for a narrow pale distal margin, while C. orinoco has dark pigmentation on the caudal fin particularly on the distal portions of the fin.[1]
The body of Cetopsis species ranges from slender to stout. Unlike all other species, C. candiru has incisiform (vs. conical) teeth on the
C. oliveirai has been found to be a
Ecology
C. arcana was collected in a
Species
There are currently 21 recognized species in this genus:[5]
- Cetopsis amphiloxa (C. H. Eigenmann, 1914)
- Cetopsis arcana Vari, Ferraris & de Pinna, 2005
- Cetopsis baudoensis (Dahl, 1960)
- Cetopsis caiapo Vari, Ferraris & de Pinna, 2005
- Cetopsis candiru Spix & Agassiz, 1829
- M. H. C. Lichtenstein, 1819)
- Cetopsis fimbriata Vari, Ferraris & de Pinna, 2005
- Cetopsis gobioides Kner, 1858
- Cetopsis jurubidae (Fowler, 1944)
- Cetopsis montana Vari, Ferraris & de Pinna, 2005
- Cetopsis motatanensis (L. P. Schultz, 1944)
- Cetopsis oliveirai (Lundberg & Rapp Py-Daniel, 1994)
- Cetopsis orinoco (L. P. Schultz, 1944)
- Cetopsis othonops (C. H. Eigenmann, 1912)
- Cetopsis parma J. C. de Oliveira, Vari & Ferraris, 2001
- Cetopsis pearsoni Vari, Ferraris & de Pinna, 2005
- Cetopsis plumbea Steindachner, 1882
- Cetopsis sandrae Vari, Ferraris & de Pinna, 2005
- Cetopsis sarcodes Vari, Ferraris & de Pinna, 2005
- Cetopsis starnesi Vari, Ferraris & de Pinna, 2005
- Cetopsis umbrosa Vari, Ferraris & de Pinna, 2005
References
- ^ .
- doi:10.1111/j.1096-3642.2007.00306.x.)
{{cite journal}}
: CS1 maint: multiple names: authors list (link - ^ River monsters[full citation needed]
- ^ Amazon Abyss[full citation needed]
- ^ Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Cetopsis in FishBase. December 2011 version.