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: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶; 1°N - 3°S
Africa: endemic to Lake Victoria (Ref. 51686, 58032).
非洲: 維多利亞湖。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 55.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 52118)
背棘 (總數) : 1; 背的軟條 (總數) : 9; 臀鰭軟條: 12 - 13. Head much depressed, smooth above; long and narrow occipital processus, narrowly separated from interneural bone; snout broadly rounded, projecting beyond lower jaw (Ref. 2988). Eye iris dark, with a vivid yellow ring (Ref. 1568). Premaxillary band of teeth 6-7 times as long as broad, shorter than and as broad as or a little narrower than the vomerine band; maxillary barbel 1.25-2.33 times head length, extending to end of pectoral fin or a little beyond in adult, to end of ventral in young; nasal barbel 1/7(adult)-1/3 of head length; outer mandibular barbel 1.5-1.83 times length of inner and 0.5-1 times head length; gill-rakers rather long, widely set; dorsal spine smooth, less than 0.5 times head length; longest soft ray of dorsal fin 0.5-0.75 head length; adipose fin 4-5.5 times as long as deep, 1.5-1.66 times as long as dorsal fin; distance between dorsal and adipose fin 0.5-0.66 times dorsal fin length; pectoral spine not serrated in adult; caudal fin deeply forked, upper lobe with long filament (Ref. 2988).
Coloration: species blackish brown or dark steel-blue above, whitish or brassy yellow beneath with grey to blackish fins (Ref. 2988). Dark, nearly black on the back, fading into silver on the body, tinged with yellow (Ref. 36900).
頭部多扁平的, 平滑的上方; 長而狹窄的後頭骨的活動, 狹窄地與背側間的硬骨分開; 吻寬廣地圓的, 突出的超過下頜.(參考文獻 2988) 眼虹膜深色的, 具有一個生動的黃色環.(參考文獻 1568) 齒 6-7 倍於寬度的上頜骨前條紋, 短於與如寬的當或稍微窄於犛骨條紋; 上頜骨觸鬚 1.25-2.33 倍於頭長, 延伸至胸鰭的末端或稍微超過在成魚中, 腹面結束當幼魚時; 鼻骨觸鬚 1/7(成魚)-頭長的 1/3; 外部的顎觸鬚 1.5-1.83 的長度內部的與 0.5-1 倍於頭長; 鰓耙相當長的, 廣泛地設定; 背棘平滑的, 少於 0.5 倍於頭長; 背鰭 0.5-0.75 頭長的長軟鰭條; 脂鰭 4-5.5 長度與深度比率,1.5-1.66 倍長於背鰭; 倍背鰭長度背鰭與脂鰭鰭 0.5-0.66 之間的距離; 胸棘不在成魚鋸齒狀的; 尾鰭深深地分岔, 上葉有長的絲狀突起.(參考文獻 2988)
體色 種暗褐色或深色的鐵-藍色的在上面，微白色或黃銅色的黃色在對黑色的鰭有灰色的之下.(參考文獻 2988) 深色的, 幾乎黑色在背部上, 褪色進入銀色的之內在身體上, 有些許黃色色調了.(參考文獻 36900)
Caught in reeds and papyrus; feeds on small fish; grows up to 30-40 pounds (= 13-18kg); flesh is good and fish is of high economic importance (Ref. 36900).
在蘆葦與紙草捕獲了。 (參考文獻 36900) 吃小魚。 (參考文獻 36900) 長到 30-40 磅 (=13-18 公斤) 。 (參考文獻 36900) 肉是好的。 (參考文獻 36900)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
非洲: 維多利亞湖。
Jayaram, K.C., 1966. Contributions to the study of the fishes of the family bagridae. A systematic account of the African genera with a new classification of the family. Bull. I.F.A.N. (A) 28(3):1064-1139. (Ref. 51686)
人類使用
漁業: 商業性
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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=0.00832 (0.00384 - 0.01800), b=2.95 (2.77 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.2 ±0.73 se; based on food items.
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): Moderate vulnerability (42 of 100).
