Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce bentopelágico; potamódromo (Ref. 51243). Tropical; 25°C - 30°C (Ref. 2060)
Africa: Niger and some other coastal basins of Guinea and Sierra-Leone, the Kribi River in Cameroon (Ref. 3203).
Comprimento de primeira maturação / Tamanho / Peso / Idade
Maturity: Lm ?, range 5 - ? cm
Max length : 16.0 cm SL macho/indeterminado; (Ref. 2915)
Espinhos dorsais (total) : 0; Raios dorsais (total) : 14 - 17; Espinhos anais: 0; Raios anais : 28 - 33. SL/BD = 4.4-6.1. Dorsal much smaller than anal inserted almost midway from origin of anal (Dorsal-Anal fin base ratio 0.32-0.46). Pectorals at most as long as head with posterior end not extending beyond origin of pelvic fins. Thin caudal peduncle with height 22.6-31.5 x SL. Color similar to B. brachyistius. Snout projecting and curved downward.(Ref.4967)
Affinities: related to Brienomyrus brachyistius, distinguished by longer anal fin in Brienomyrus longianalis and by lower peduncle height SL ratio. May be limited to the delta and the lower reaches of rivers (Ref. 3203).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Lévêque, C.D. Paugy and G.G. Teugels (eds.), 1990. Faune des poissons d'eaux douces et saumâtres d'Afrique de l'Ouest. Tome 1. Coll. Faune Tropicale N° 28. Musée Royal de l'Afrique Centrale, Tervuren, Belgique et O.R.S.T.O.M., Paris, France. 384 p. (Ref. 2703)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2024-1)
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
Baixar XML
Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00631 (0.00345 - 0.01155), b=2.68 (2.52 - 2.84), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Nível Trófico (Ref.
69278): 3.1 ±0.2 se; based on diet studies.
Resiliência (Ref.
120179): médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (Fec=417-2,252).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).