Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный донно-пелагический. Tropical; 25°C - 28°C (Ref. 2060)
Africa: south Benin (lower Ouémé River) to Nigeria (lower Cross River)(Ref. 57290, 81648). Reports from Cameroon (Ref. 3575, 51193) unconfirmed and questionable (Ref. 57290, 81648). Report from Gabon dubious (Ref. 81648).
Size / Вес / Возраст
Maturity: Lm ? range ? - ? cm
Max length : 32.0 cm TL самец/пол неопределен; (Ref. 81648)
колючие лучи спинного плавника (общее число) : 0; членистые (мягкие) лучи спинного плавника (общее число) : 45 - 48; колючие лучи анального плавника: 0; членистые (мягкие) лучи анального плавника: 32 - 35. Diagnosis: body elongate, tapering backwards; lateral-line scales medium-sized, numbering 73-83; head depressed anteriorly and covered with larger scales; lower jaw slightly longer than upper, with 3-4 well developed canines; dorsal and anal fins not touching caudal fin; dorsal fin with 45-48, anal with 32-35 rays; 8-11 chevron-shaped dark bars on sides (Ref. 57290, 81648).
Coloration: body light to dark grey, back and top of head darker, underside lighter; dark lateral band on head, broadening between hind margin of eye and hind margin of gill cover, followed by a large, rounded, black spot; small, rounded black spot at base of caudal fin; all fins covered with small dark spots forming more or less distinct oblique bands; ground colour of juveniles ochre, and a long, black lateral band extending from tip of snout to hind margin of caudal fin (Ref. 57290, 81648).
Obligate air-breathing (Ref. 126274); Maximum SL reported is 17.2 cm (Ref. 57290).
Life cycle and mating behavior
Maturities | размножение | Spawnings | Egg(s) | Fecundities | личинки
The eggs of this species float to the with floating plants covered surface where they are guarded by the male.
Teugels, G.G., 2003. Channidae. p. 443-446 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. 57290)
Статус Красного Списка МСОП (Ref. 130435)
Угроза для людей
Harmless
Использование человеком
рыболовство: коммерческий
дополнительная информация
инструменты
Специальные отчеты
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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=0.00724 (0.00396 - 0.01326), b=3.01 (2.85 - 3.17), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (Ref.
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
устойчивость к внешним воздействиям (Ref.
120179): высокий, минимальное время удвоения популяции до 15 месяцев (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (22 of 100).
Nutrients (Ref.
124155): Calcium = 121 [59, 236] mg/100g; Iron = 1.02 [0.49, 1.92] mg/100g; Protein = 18.2 [16.5, 20.1] %; Omega3 = 0.271 [0.107, 0.695] g/100g; Selenium = 54.8 [19.9, 144.0] μg/100g; VitaminA = 68.4 [20.2, 219.4] μg/100g; Zinc = 1.52 [1.01, 2.32] mg/100g (wet weight);
