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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:

Etymology = Genus

Other Sources:

Fishbase  Search Google  All Catfish Species Inventory

Relevant Information:

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. Found over muddy bottoms in brackish river mouths. Probably prefers large rivers and slightly brackish waters. Occurs in very thick schools over muddy bottoms. Diet: Omnivorous, with a tendency towards detritivorous feeding. Searches for food in the zones of the village waste waters. Breeding: During reproduction, towards the month of December, the ventral fins and the mandible turn pink.

Common Name:

Cocosoda catfish


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




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


22cm (8¾ins)


21-25°c (69-77°f.)




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 )



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