分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Bagridae (Bagrid catfishes)
鱨科 (Bagrid catfishes)
Etymology: Bagrus: Mozarabic, bagre, taken from Greek, pagros = a fish (Dentex sp.) (Ref. 45335).
More on author: Lönnberg.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶; 4°S - 6°S
Africa: restricted to the single type specimen from the Lubosi River (Luala tributary, lower Congo River basin) (Ref. 78218). Presence in the Lulua (Ref. 46243) unconfirmed and doubtful (Ref. 3236, 78218).
非洲: 剛果河中游系統。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 24.3 cm SL 雄魚/尚未辨別雌雄; (Ref. 3236)
簡短描述
型態特徵 | 形態測量圖
背棘 (總數): 1; 背的軟條 (總數): 8-9; 臀鰭軟條: 11. Head smooth above; snout broadly rounded; band of premaxillary teeth 6 times as long as broad, close to and nearly as broad as the crescentic band of vomerine teeth; maxillary barbel 2.25 times head length, reaching beyond pelvic fins; nasal barbel 0.4 times head length; inner mandibulary barbel 0.43 times head length; outer mandibulary barbel 0.86 times head length; occipital processus narrow and short, widely separated from the first interneural bone; longest branched ray of dorsal fin 0.71 times head length; dorsal spine very weak; adipose fin 4 times longer than high, much longer than the base of the dorsal fin; caudal fin deeply forked, both lobes with long filaments; pectoral spine weak with the outer half articulated (Ref. 52141).
Coloration: brown above with irregularly scattered small black dots which are most numerous on the caudal and adipose fin, but are also seen on the back and sides; no dots below lateral line; whitish below (Ref. 52141).
頭部平滑的上方; 吻寬廣地圓的; 上頜骨前齒 6 的條紋倍於寬度, 接近與幾乎像犛骨齒的新月形條紋一樣的寬; 上頜骨觸鬚 2.25 倍於頭長, 超過腹鰭; 鼻的觸鬚 0.4 倍於頭長; 內部的下顎觸鬚 0.43 倍於頭長; 外部的下顎觸鬚 0.86 倍於頭長; 後頭骨活動狹窄的與短,與第一個背側間的硬骨分得很開; 背鰭 0.71 的長分枝鰭條倍於頭長; 背棘非常弱的; 脂鰭 4個長度與高度比率, 遠長過背鰭基底; 尾鰭深深地分岔,雙葉有長的絲狀突起; 胸棘弱的與外部的一半接合.(參考文獻 52141)
體色 上方褐色的有不規則的分散小黑色的點最多的在尾鰭與脂鰭上, 但是也在背部與側邊上被見到; 沒有點在側線下; 腹面略白的.(參考文獻 52141)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 剛果河中游系統。
Risch, L.M., 1986. Bagridae. p. 2-35. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3236)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.7 ±0.9 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 (Assuming Fec>10,000).
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).
