Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bottenlevande. Tropical; 24°C - 30°C (Ref. 12468)
Africa: Ouémé basin (Benin) (Ref. 57415, 81678) up to the Ntem (Cameroon) (Ref. 81678), including the Lake Chad basin (Ref. 57415). Also known from Bioko Island (formerly Fernando Poo) in Equatorial Guinea (Ref. 81678). Reported from the middle Congo River basin (Ref. 6060, 46252), but this is questionable and unconfirmed in Ref. 57415 or 81678.
Storlek / Vikt / Ålder
Könsmognad: Lm ? range ? - ? cm
Max length : 34.5 cm SL hane/ej könsbestämd; (Ref. 57415)
Taggstrålar i ryggfenan (totalt) : 24 - 33; Mjukstrålar i ryggfenan (totalt) : 93 - 143; Mjukstrålar i analfenan: 90 - 140; Ryggkotor: 95 - 118. Diagnosis: distance from tip of snout to last externally visible dorsal spine relatively short, 43.2-57.9% SL, decreasing with size (Ref. 57415, 81678). Postanal length relatively long, 44.1-58.3, increasing with size (Ref. 57415, 81678), comparable to or longer than preanal length, 40.0-51.8% SL (m=46.6)(Ref. 57415, 81678). Distance from tip of snout to last externally visible anal spine relatively short, 44.3-57.3 SL, decreasing with size (Ref. 57415, 81678). 1st dorsal spine situated clearly posterior to posterior edge of pectoral fin (Ref. 57415), distance from posterior edge of pectoral fin to origin of first dorsal spine 8.9-89.3% HL (Ref. 57415, 81678). Gill opening small, its distance to dorsal pectoral fin base relatively long, 8.3-14.9% HL (mean 11.5%); 23+1 to 32+1 (median 27+1) dorsal spines (Ref. 81678). Distance from anterior border of snout to first anal spine 42.1-53.5% SL (m=48.2), decreasing with size (Ref. 57415).
Body shape (shape guide): eel-like.
Maximum reported total length 354mm (Ref. 57415, 81678).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Vreven, E.J., 2003. Mastacembelidae. p. 708-737 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57415)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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Harmless
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00129 - 0.00562), b=2.94 (2.76 - 3.12), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Sårbarhet i fisket (Ref.
59153): Low to moderate vulnerability (32 of 100).
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