分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Alestidae (African tetras)
Alestidae (African tetras)
Etymology: Brycinus: Greek, ebrykon, brykomai = to bite, to gnaw (Ref. 45335).
More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的; pH range: 6.8 - 7.8. 熱帶; 23°C - 27°C (Ref. 12468)
Africa: Southern Ghana and southern Nigeria (Lagos and Bénoué basin) (Ref. 2880, 81279). Also recorded in Sanaga River basin, Cameroon (Ref. 52331).
非洲: 南方迦納與奈及利亞 (拉哥斯 與 Benoue 流域) 南部.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 25.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 31256); 最大體重: 300.00 g (Ref. 3799)
臀棘: 0; 臀鰭軟條: 16 - 18. Diagnosis: parietal fontanella absent in adults and porelinke in juveniles, disappearing with growth; snout long, comprised three times in head length; dorsal-fin origin distincly behind pelvic-fin insertions; head broad; adults large-sized; no sexual dimorphism affecting anal-fin shape in adult males; body depth less than three times in the standard length in adults; 8-12 teeth in outer premaxillary row; 4.5 scales above lateral line; 21-23 lateral line scales; 13-15 anal fin branched rays; 18-20 gill rakers on lower part of first branchial arch (Ref. 2880, 81279).
成魚有沒有囟門。 長的吻， 3個 x 頭長, 大的頭部。 大的成魚大小。 臀鰭的沒有性同種二形。 身體縱深, 對於成魚的 <3 x SL。 全身褐色的背面, 銀色的側邊與白色的腹面。
Affinities: B. macrocephalus
分類相關: B. macrocephalus
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 南方迦納與奈及利亞 (拉哥斯 與 Benoue 流域) 南部.
Paugy, D., 1990. Characidae. p. 195-236. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres de l'Afrique de l'Ouest. Tome I. Coll. Faune Tropicale n° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren et O.R.S.T.O.M., Paris, 384 p. (Ref. 2880)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
瀕危 (EN) (B2ab(iii)); Date assessed: 12 August 2019
人類使用
漁業: 低經濟
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00496 - 0.02540), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (15 of 100).
