Aspredo aspredo

Aspredo aspredo

Taxobox
name = "Aspredo aspredo"
regnum = Animalia
phylum = Chordata
classis = Actinopterygii
ordo = Siluriformes
familia = Aspredinidae
subfamilia = Aspredininae
genus = "Aspredo"
genus_authority = Scopoli, 1777
species = "A. aspredo"
binomial = "Aspredo aspredo"
binomial_authority = (Linnaeus, 1758)
synonyms =
*"Silurus aspredo"
Linnaeus, 1758
*"Platystacus laevis"
Bloch, 1794
*"Aspredo sicuephorus"
Valenciennes, in Cuvier & Valenciennes, 1840
*"Aspredo batrachus"
Gronow, in Gray, 1854
*"Aspredo sicyephorus"
Günther, 1864

"Aspredo aspredo" is the only species of catfish (order Siluriformes) in the genus "Aspredo" of the family Aspredinidae.cite journal|url=http://silurus.acnatsci.org/ACSI/library/biblios/2007_Ferraris_Catfish_Checklist.pdf|title=Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types|first=Carl J., Jr.|last=Ferraris|journal=Zootaxa|volume=1418|pages=1–628|year=2007|format=PDF]

This species originates from the lower portions of rivers from Venezuela to northern Brazil. It occurs in the Orinoco delta, through the Guianas, to the Amazon River.

"A. aspredo" is the largest species of aspredinid, reaching about 38.3 centimetres (15.1 in) SL.cite book|title=Fishes of the World|last=Nelson|first=Joseph S.|publisher=John Wiley & Sons, Inc|year=2006|isbn=0-471-25031-7] FishBase species|genus=Aspredo|species=aspredo|year=2007|month=Aug] The maxillary barbels are attached to the head, the colouration is uniform without any pattern of dark saddles, and the unculiferous tubercles present in other aspredinids are highly reduced.

"A. aspredo" is a benthic fish occurring on sandy-muddy bottoms of brackish waters and coastal rivers. However, it appears to enter further into fresh water than its relatives.cite web|url=http://tolweb.org/Aspredo/15266|last=Friel|first=John P|title=Aspredo. "Aspredo aspredo" (Linnaeus, 1758)|date=2000-04-14|publisher=Tree of Life Web Project|accessdate=2007-08-07] It is found on soft bottoms of shallow turbid water near river mouths. The species has a peculiar mode of egg incubation wherein the female catfish carries the eggs firmly attached to the underside of the body. This seems to be an adaptation to facilitate the oxygenation of the eggs in muddy environments. Reproduction probably occurs during the earlier part of the year.

References


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