Bagrus filamentosus Pellegrin, 1924

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Siluriformes \| Bagridae
Synonyms	Porcus filamentosus, ... more
Common names	Silver catfish, Schweinewels, Kuilsiuugu, ... more

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Main reference

Risch, L.M. 1986. (Ref. 3236)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 69.0 cm TL male/unsexed; (Ref. 3055); max. published weight: 2,050 g (Ref. 3013)

Environment

Demersal; freshwater

Climate / Range

Tropical; 23°C - 28°C (Ref. 12468); 16°N - 8°N

Africa: Niger River system.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 1; Dorsal soft rays (total): 10 - 11; Anal soft rays: 12 - 13. Snout slightly rounded and protruded (Ref. 3055). Maxillary barbel 1.5-3.2 times head length (Ref. 3032), reaching the anal fin in juveniles and the pectoral fin in adults; nasal barbel 0.2 times head length (Ref. 3055). External mandibulary barbel 0.6-1 times head length (Ref. 3032), 1.5-2 times the length of the internal mandibulary barbel (Ref. 2756). Internal mandibulary barbel 0.42-0.56 times head length (Ref. 3069). Eyes supralateral (Ref. 2756). Occipital processus long, close to the interneural (Ref. 3055). Dorsal spine smooth (Ref. 3069). First branched dorsal fin ray prolonged into a long filament, and the succeeding ones in shorter filaments (Ref. 31256, Ref. 7324). Only the first branched ray is filamentous in juveniles (Ref. 3069, Ref. 2756). Longest filament 2-3 times in standard length; adipose fin height 4.1-5.7 times into length of its base (Ref. 3036), 1.75 times longer than the dorsal fin (Ref. 3056, Ref. 3055). Distance between dorsal and adipose fin small (Ref. 2756). Caudal fin deeply forked (Ref. 3056). Upper lobe of caudal fin often with a short filament (Ref. 7324), lower lobe rounded and without filament (Ref. 3056). Pectoral filaments often present (Ref. 13851, Ref. 3036, Ref. 3055), reaching the pelvics (Ref. 3069). Strong pectoral spine present (Ref. 3069, Ref. 3032). Pelvic fins more inserted under 7-8 branched rays of dorsal fin (Ref. 13851, Ref. 3036). Coloration: life specimens greyish or yellowish, with a white belly (Ref. 7324). Fins grey, often tinged with rose (Ref. 13851, Ref. 7324). Caudal fin sometimes with black spots; juveniles are blackish (Ref. 7324).

Eats fish (Ref. 51193).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (Assuming Fec>10,000)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
High vulnerability (57 of 100)	Not marketed/unknown

Entered by Sa-a, Pascualita

Modified by Musschoot, Tobias

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Page last modified by : elaxamana, 15 July 2009

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