Nigeria country information

Common names: Asan
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from the Ogun (Ref. 13331, 43912, 57127), Oshun, Niger delta, Kwa Ibo (Ref. 43912, 57127) and Cross (Ref. 31256, 43912, 57127, 81643). Type locality of the holotype and the 6 paratypes of Eutropiellus vandeweyeri: "Lower Niger delta, between Lagos and Port Harcourt (probably: environment of Aba, lower Niger Delta), Nigeria" (Ref. 43912). Also Ref. 3570.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ni.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: De Vos, L., 2003
National Database:

Common names from other countries

Nigeriankuultomonni, Pääsusaba-läiksäga, Schwalbenschwanz-Glaswels, ... more

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Schilbeidae (Schilbid catfishes)
Etymology: Pareutropius: Greek, par = beside, near + Greek, eu = well + Greek, tropis = keel, in reference to the compressed body of the fish; buffei: Named for Mr Buffe, former Director of the "Service de Eaux et Forets" of Dahomey (now Benin) (Ref. 43912).

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

; agua dulce demersal; pH range: 6.0 - 8.0; dH range: 5 - 19; potamodromo (Ref. 51243). Tropical; 24°C - 27°C (Ref. 1672); 14°N - 4°N

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Africa: lower Niger (Nigeria), lower Ouémé (Benin) and coastal freshwater lagoons lying between these rivers; also in the Cross River (Nigeria)(Ref. 57127, 81643).

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 11.5 cm TL macho / no sexado; (Ref. 57961)

Short description Morfología | Morfometría

Espinas dorsales (total): 1; Radios blandos dorsales (total): 4-5; Radios blandos anales: 28 - 36. Diagnosis: inner and sometimes outer side of pectoral spine with small serrations; 28-36 branched anal-fin rays; 5-9 gill rakers on lower limb of first gill arch; only one pair of mandibular barbels (Ref. 43912, 57127, 81643). Palatine teeth present (Ref. 57127, 81643). 6-8 branchiostegal rays on one side of head; 4-5 branched dorsal fin rays; peculiar coloration characterized by dark spot on upper and lower lobe of caudal fin, oblique lateral streak from posterior border of opercle to above anus and a mid-dorsal narrow dark line which is never continuous with upper caudal fin spot (Ref. 43912).

Probably lives in open water, in relation to its gregarious habits (Ref. 43912). Oviparous, eggs are unguarded (Ref. 205). Max. TL 81mm (Ref. 3570, 43912), max. SL 70 mm (Ref. 81643).

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Distinct pairing (Ref. 205). Lay about 100 eggs.

Main reference Upload your references | Referencias | Coordinador | Colaboradores

De Vos, L., 1992. Schilbeidae. p. 432-449. In C. Levêque, D. Paugy, and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres d'Afrique de l'Ouest Tome 2. Faune Tropicale n° 28. Musée Royal de l'Afrique Centrale, Tervuren, and O.R.S.T.O.M., Paris. (Ref. 7351)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 09 June 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesquerías:

FAO(Publication : search) | FishSource |

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Fuentes de Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00832 (0.00434 - 0.01593), b=3.05 (2.88 - 3.22), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Nivel trófico (Ref. 69278): 3.2 ±0.5 se; based on size and trophs of closest relatives

Resiliencia (Ref. 120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Fec=100).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Price category (Ref. 80766): Unknown.

Pareutropius buffei (Gras, 1961)