分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性; pH range: 6.0 - 7.5; dH range: 7 - 15; 河川洄游 (Ref. 51243). 熱帶; 22°C - 27°C (Ref. 1672)
Africa: widespread, known from Senegal to Cameroon, including the Lake Chad basin (Ref. 2936, 80507, 81638, 86396). Also in the Dja and Bumba rivers (middle Congo River basin) in Cameroon (Ref. 46233). Reported from Ntem and Kribi Rivers (Ref. 51193), but not confirmed in Ref. 81638. Holotype from Gabon (Ref. 93570), without further specifications.
非洲: 塞內加爾, Konkoure , Kolente ,很少 Scarcies , Waanje ,聖保羅, 聖約翰, Cess ,卡瓦利上游,薩桑德拉河上游, Bandama ,我, Comoe , Bia , Pra ,佛塔河, 尼日 + Benoue ,十字河與查德流域。
大小 / 重量 / 年齡
Maturity: Lm ?  range ? - ? cm
Max length : 6.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 2936)
簡短描述
型態特徵 | 形態測量圖
背棘 (總數): 0; 背的軟條 (總數): 11-14; 臀棘 0; 臀鰭軟條: 8 - 12. Diagnosis: body slightly elongate; head length 3.7-4.3x SL; 2.5-6 scales between anus and anal-fin base; 12-16 scales around caudal peduncle; 12-18 pectoral branched rays; 8-10 pelvic branched rays; series of separate spots along lateral line, not always distinct (frequently suffused by marbled color pattern on sides); scale formula 4-5.5/40-46 (Ref. 2936, 86396). 43-46 pored (except terminal 1-2) lateral line scales (Ref. 81638). Tip of pelvic fin extending distinctly beyond vent; dorsal portions of body with distinct dark, vertically oriented dark marks forming saddle-shaped pigmentation pattern; various dark marks on lateral surface of body without prominent, horizontally elongate dark spots on mid-lateral surface of body; dark pigmentation on body above horizontal through base of pectoral fin (Ref. 81638). 12-14 (Ref. 81638) or 11-14 (Ref. 2936, 86396) total dorsal fin branched rays. 10-12 (Ref. 81638) or 8-12 (Ref. 2936, 86396) total anal fin branched rays.
短的圓頭吻。 側面的眼睛。 頭長 23.3-27.3% SL。 在脂肪到尾鰭基底的後端之間的 6-11個鱗片。 鰭有時有顯著的斑點形成 2-3個橫紋了不規則的: 2 在背鰭與尾鰭上,1 在臀鰭與腹鰭上。 臀鰭起點時常有顯著的深色斑點。 脂鰭有深色的圓斑點。 當成魚時的背部紅色的頂端。 2.5-6 在肛門與臀鰭起源之間的鱗片。 個別的斑塊沿著側線不常看得見的。 背面的 7-11 橫紋。 胸鰭達成腹面的起源。
Maximum TL was recorded at 7.8 cm (Ref. 7094). Feeds on small invertebrates (Ref. 13614).
最大體長TL記錄為 7.8 公分。 (參考文獻 7094)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 塞內加爾, Konkoure , Kolente ,很少 Scarcies , Waanje ,聖保羅, 聖約翰, Cess ,卡瓦利上游,薩桑德拉河上游, Bandama ,我, Comoe , Bia , Pra ,佛塔河, 尼日 + Benoue ,十字河與查德流域。
Gosse, J.-P. and E.J. Coenen, 1990. Distichodontidae. p. 237-260. 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 and O.R.S.T.O.M., Paris, 384 p. (Ref. 2936)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 01 November 2019
人類使用
漁業: ; 水族館: 商業性
更多資訊
年龄/大小成長長度-重量長度-長度長度-頻率形態測量圖型態特徵仔魚稚魚動力學入添量豐度BRUVS
參考文獻養殖養殖資訊品種遺傳學Electrophoreses遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
工具
特別的報告
下載 XML
網路資源
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=0.02188 (0.00867 - 0.05518), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.4 ±0.45 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).