Polypterus bichir lapradei Steindachner, 1869

Bichir

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

Classification	Actinopterygii \| Polypteriformes \| Polypteridae
Synonyms	Polypterus lapradei, ... more
Common names	拉氏多鳍鱼, Adagba, Am korkor, ... more

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Image of Polypterus bichir lapradei (Bichir)

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Main reference

Gosse, J.-P. 1990. (Ref. 2835)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 74.0 cm TL male/unsexed; (Ref. 2835); max. published weight: 2,000 g (Ref. 3034)

Environment

Demersal; freshwater

Climate / Range

Tropical

Africa: found in Senegal River, Gambia River, Geba River, Volta River, Niger, Benoue River and Ouémé River (Ref. 2835). Also known from Lake Chad and Logone and Chari Rivers (Ref. 3188).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 1315; Anal spines: 0; Anal soft rays: 14 - 15; Vertebrae: 60 - 62. Subcylindrical body; its depth 6.6-11.2 times in its length; head length 4.3-5.6 times in body length (Ref. 2835). Head width 1.5-2.2 times in head length; eye-diameter 8-12 times in head length (Ref. 2835). Lower jaw longer than upper jaw (Ref. 2835). Number of dorsal finlets: 13-15 (Ref. 42908). Number of branched dorsal and caudal rays: 20-21 (Ref. 2835). Pectoral fin reaching first dorsal spine (Ref. 2835). Ganoid scales (Ref. 42904): 58-68 lateral line scales, 46-52 scales around body, 11-15 predorsal scales (Ref. 2835, Ref. 42908). Lateral line scales are notched on the posterior border (Ref. 2835). Yellowish or greenish colored on the dorsal side, ventral side more clear; darker longitudinal bands on lateral side (Ref. 2835). Dark spots and blotches are sometimes present on caudal, ventral and pelvic fins and underside of the belly (Ref. 13851).

This species inhabits rivers and swamps (Ref. 9695). It migrates to the flooded lands and swamps to spawn (Ref. 3074, Ref. 43852). It appears to be entirely piscivorous when adult (Ref. 3034).


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

Human uses
Fisheries: commercial


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)

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Moderate to high vulnerability (50 of 100)	Not marketed/unknown

Entered by Cruz, Tess

Modified by Boden, Gert

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Page last modified by : elaxamana, 15 July 2009

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