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Pseudauchenipterus nodosus (Bloch, 1794)

Image contributors to this species:

Alfredo Carvalho Filho (1) Silksworth Aquatics (1) Donald Taphorn (1)

ScotCat Sources:

Other Sources:

Relevant Information:

Description: Dorsal spines (total): 1; Dorsal soft rays (total): 6; Anal spines: 0; Anal soft rays: 20 - 25. Body is thick compared to that of Auchenipterus. Snout is very rounded, with a recessed lower jaw. The moderately large eyes are lateral in position. The zigzag lateral line is complete. The branchiospines are short and numerous. The caudal fin has 17 spines. Habitat: Found over muddy bottoms in brackish river mouths. Probably prefers large rivers and slightly brackish waters. Occurs in very thick schools over muddy bottoms. Reproduction: During reproduction, towards the month of December, the ventral fins and the mandible turn pink. Diet: Omnivorous, with a tendency towards detritivorous feeding. Searches for food in the zones of the village waste waters. Etymology: The genus name Pseudauchenipterus: pseudo-, false, i.e., although this genus may resemble Auchenipterus, such an appearance is false. The specific name: nodosus: knotty or swollen, referring to the large swelling at base of dorsal fin.

Common Name:

Cocosoda catfish

Synonyms:

Silurus nodosus, Auchenipterus furcatus, Pseudauchenipterus guppyi, Pseudauchenipterus nigrolineatus, Silvaichthys aguilerae.

Family:

Auchenipteridae

Distribution:

South America: Lower reaches of rivers and into estuaries from Venezuela and southern Trinidad to Brazil, south at least to Bahia.

Size:

22.0cm (8¾ins)

Temp:

21-25°c (69-77°f.)

p.H.

6.5-8.0.

Reference:

Ferraris, C.J. Jr., 2003. Auchenipteridae (Driftwood catfishes). p. 470-482. 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.
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. 2016.FishBase. World Wide Web electronic publication. www.fishbase.org, ( 01/2016 ).
The ETYFish Project Fish Name Etymology Database © Christopher Scharpf.

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

Pseudauchenipterus nodosus

Pseudauchenipterus nodosus
Georgetown, Guyana Fish Market

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