Environment: milieu / climate zone / depth range / distribution range
Ekologi
; air tawar bentopelagis; potamodromous (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).
Length at first maturity / Size / Weight / umur
Maturity: Lm ?, range 5 - ? cm
Max length : 16.0 cm SL jantan/; (Ref. 2915)
Duri punggung (Keseluruhan (total)) : 0; duri punggung lunak (Keseluruhan (total)) : 14 - 17; Duri dubur: 0; Sirip dubur lunak: 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).
Life cycle and mating behavior
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva
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 IUCN Red List (Ref. 130435: Version 2024-1)
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Phylogenetic diversity index (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).
Trophic level (Ref.
69278): 3.1 ±0.2 se; based on diet studies.
Daya lenting (Ref.
120179): sedang, Waktu penggandaan populasi minimum 1.4 - 4.4 tahun (Fec=417-2,252).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).