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Cetopsis umbrosa Vari, Ferraris & de Pinna, 2005

Image contributors to this species:

Kiruya Momochi (3)

ScotCat Sources:

Other Sources:

Relevant Information:

Description: Can be distinguished from all of its congeners by the combination of the presence of an eye, the conical teeth on the vomer and dentary, the rounded posterior nares which is distinctly separated from the contralateral nares by a distance greater than the width of the posterior nares, the absence of a dark humeral spot, the presence of a posteriorly-rounded, variably-developed, bilobed patch of dark pigmentation at the base of the caudal fin, the absence of a spot of dark pigmentation on the base of the dorsal fin and the absence of prominent dark pigmentation along the membrane behind the first ray of the dorsal fin, the presence of approximately eye-size dark spots on the lateral surface of the body, the presence of fine, scattered, dark pigmentation across the lateral and anterior surfaces of snout and the lateral surface of the body. It is further distinguished from the externally somewhat similar C. starnesi in the number of precaudal vertebrae (14 versus 11 or 12, respectively), caudal vertebrae (30 versus 33, respectively), and total anal-fin rays (26 versus 27 or 28, respectively), (Vari, R. P., C. J et. al 2005). Etymology: The specific name umbrosa: Latin for shady, referring to dark pigmentation on dorsal and anterior portions of the snout compared with unpigmented snout on the geographically proximate and somewhat externally similar C. montana.

Common Name:

None

Synonyms:

None

Family:

Cetopsidae

Distribution:

South America: Orinoco River basin, Colombia. Type locality: Colombia. Meta: Río Negro, downstream from main Villavicencio to Puerto Lopez highway at La Balsa (04º04'N, 73º04'W).

Size:

5.5.0cm. (2¼ins)

Temp:

22-28°c (71-83°f )

p.H.

6.0-7.0.

IUCN Red List

The species Cetopsis umbrosa is only known from its holotype. There is no information on the population status of threats. Therefore, it is classified as Data Deficient (IUCN 2021).

Reference:

Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Froese, R. and D. Pauly. Editors. 2026. FishBase. World Wide Web electronic publication. www.fishbase.org, ( 02/2026 ).
Vari, R. P., C. J. Ferraris Jr. & M. C. C. de Pinna. 2005. The Neotropical whale catfishes (Siluriformes: Cetopsidae: Cetopsinae), a revisionary study. Neotropical Ichthyology 3:127-238.
Villa-Navarro, F., DoNascimiento, CD, Mojica, J.I., Rodríguez-Olarte, D., Taphorn, D.C. & Herrera-Collazos, E.E. 2021. Cetopsis umbrosa. The IUCN Red List of Threatened Species 2021.

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

Cetopsis umbrosa

Cetopsis umbrosa

Cetopsis umbrosa
Dorsal view

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