Benin country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the Ouémé River. Also Ref. 3516, 13331.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/bn.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Roberts, T.R., 1992
National Database:

Common names from other countries

African knife-fish, Poisson couteau, Nožovec africký, ... more

Classificação / Names Nomes comuns | Sinónimos | Catalog of Fishes(Género, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Osteoglossiformes (Bony tongues) > Notopteridae (Featherbacks or knifefishes) > Xenomystinae
Etymology: Xenomystus: Greek, xenos = strange + Greek, mystax = whiskered, used by Belon in 1553 to describe all fishes with whiskers (Ref. 45335).
More on author: Günther.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; Água doce demersal; pH range: 6.0 - 8.0; dH range: 5 - 19. Tropical; 22°C - 28°C (Ref. 1672)

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Africa: widely distributed in tropical Africa, in the Nile, Chad, Niger, Ogowe and Congo basins (Ref. 7431). Also present in coastal rivers in Sierra Leone, Liberia, Togo, Benin and Cameroon, but not found in Côte d'Ivoire nor Ghana (Ref. 7431).

Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 30.0 cm SL macho/indeterminado; (Ref. 31256)

Descrição breve Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 0; Espinhos anais: 0; Raios anais moles: 108 - 130. Body height 5-5.4 x SL, head length 6.9-7.5 x SL, snout smaller than eye, eye diameter 3.8-4.5 x head length, maxilla extends to vertical of eye center or just under the eye's posterior border, ventral spines 25-32

Obligate air-breathing (Ref. 126274); Prefers quiet waters with vegetation. Females lay 150-200 eggs of 2 mm diameter (Ref. 1672). Can produce barking sounds. Comes to the surface from time to time to swallow air. Feeds at dusk and during the night on worms, crustaceans, insects and snails (Ref. 7020).

Life cycle and mating behavior Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Roberts, T.R., 1992. Systematic revision of the old world freshwater fish family Notopteridae. Ichthyol. Explor. Freshwat. 2(4):361-383. (Ref. 7431)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

Preocupação menor (LC) ; Date assessed: 05 June 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

Harmless

Utilização humana

Pescarias: sem interesse; Aquário: Espécies comerciais

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.0010 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00832 (0.00318 - 0.02175), b=2.99 (2.77 - 3.21), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Nível Trófico (Ref. 69278): 3.3 ±0.44 se; based on food items.

Resiliência (Ref. 120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (27 of 100).

Xenomystus nigri (Günther, 1868)