Chrysichthys nigrodigitatus (Lacepède, 1803)
Belly up
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Chrysichthys nigrodigitatus
拍攝者 Hippocampus-Bildarchiv
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拍攝者 Hippocampus-Bildarchiv
分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei > Siluriformes (Catfishes) > Claroteidae (Claroteid catfishes)
Etymology: Chrysichthys: Greek, chrysos = golden + Greek, ichthys = fish (Ref. 45335).
More on author: Lacepède.
Etymology: Chrysichthys: Greek, chrysos = golden + Greek, ichthys = fish (Ref. 45335).
More on author: Lacepède.
Taxonomic Remarks
The species Chrysichthys furcatus Günther, 1864 is considered valid in Eschmeyer (CofF ver. Mar. 2012: Ref. 89686). It is treated here a synonym of Chrysichthys nigrodigitatus (Lacepède, 1803) following Risch (1992: Ref. 7324), Risch (2003: Ref. 57126) and Geerinckx et al. (2007: Ref. 81642).
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
; 淡水 居於水底的; 河川洄游 (Ref. 51243); 深度上下限 3 - ? m (Ref. 13851). 熱帶; 22°C - 28°C (Ref. 12468); 15°N - 13°S, 16°W - 30°E
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Africa: Senegal to Cabinda, Angola (Ref. 3236, 81642). To the north also reported from Mauritania (Ref. 55783), southwards down to the lower Congo River (Ref. 1879) and Angolan coastal rivers (Ref. 120641).
非洲: 塞內加爾到卡賓達，安哥拉。
非洲: 塞內加爾到卡賓達，安哥拉。
初熟時的長度 / 大小 / 重量 / 年齡
簡短描述 檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 2; 背的軟條 (總數) : 6; 臀棘: 0. Diagnosis: recognized by its pointed snout, the rather small mouth, and the width of the premaxillary tooth plate (1/5-1/3.5, usually 1/4, of head length); vomerine dentition represented by a square to rectangular tooth plate which begins to develop at sizes between 60 and 70 mm standard length; palatine dentition developing at sizes over 100 mm standard length, initially as isolated teeth; second or third branched dorsal-fin ray always the longest; upper caudal-fin lobe much longer than lower lobe; gill rakers long and smooth; other characters, such as length of dorsal fin, number of branched rays in anal fin, and number of gill rakers on first gill arch, are subject to intraspecific variations; sexually mature males and (some) ripe females show considerable morphological differences; such specimens have often been labelled as Chrysichthys furcatus; maturity occurs probably at a rather advanced stage (at over 200 mm SL) and leads to the inflation of head, broadening of mouth and premaxillary tooth plate, shortening of spines and overgrowth of fin-spines by thick skin, the fins becoming more rounded, and the caudal-fin lobes sometimes becoming subequal; the body acquires an emaciated, thinned down appearance (Ref. 57126, 81642). Characters only clear in mature males in
reproduction: adipose fin short, base contained 8-11 times in SL and measuring 28-64% of distance between dorsal fin and adipose fin; maxillary barbel not reaching beyond dorsal spine when extended; head swollen; skin mucous; spines thick and covered with skin (Ref. 81642).
Body shape (shape guide): elongated.
Body shape (shape guide): elongated.
Adults occur in shallow waters of lakes (less than 4 m), over mud and fine sand bottom. Omnivorous, feed on seeds, insects, bivalves and detritus (Ref. 13851). Feeding becomes specialized with age and size, larger fish may feed on decapods and fish (Ref. 27935).
出現於湖 (少於 4 公尺) 的淺水域,遍及泥與細砂底部。 雜食性, 吃種子，昆蟲，二枚貝與碎屑。 (參考文獻 13851) 進食變成隨著年齡特殊化與大小, 較大的魚可能吃十足類動物與魚.(參考文獻 27935)
出現於湖 (少於 4 公尺) 的淺水域,遍及泥與細砂底部。 雜食性, 吃種子，昆蟲，二枚貝與碎屑。 (參考文獻 13851) 進食變成隨著年齡特殊化與大小, 較大的魚可能吃十足類動物與魚.(參考文獻 27935)
生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 塞內加爾到卡賓達，安哥拉。
主要參考資料
上傳您的推薦信 | 參考文獻 | 合作者 | 合作者
Risch, L. and E.J. Vreven, 2007. Claroteinae. p. 607-629. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 74659)
CITES
Not Evaluated
對人類具威脅
無害處的
人類使用
漁業: 低經濟; 養殖: 商業性; 游釣魚種: 是的
FAO - 水產養殖系統: production search漁業: landings search; Publication: search | FishSource |
更多資訊
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網路資源
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基於模型的估計
|
系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.01000 (0.00801 - 0.01249), b=2.96 (2.91 - 3.01), in cm total length, based on LWR estimates for this species (Ref. 93245). |
|
營養階層 (參考文獻 69278) |
3.2 ±0.41 se; based on food items. |
|
回復力 (參考文獻 120179) |
中等的, 族群倍增時間最少 1.4 - 4.4年 (K=0.12-0.65; Fec = 3,086-28,086). |
|
釣魚的脆弱性 (Ref. 59153) |
Low to moderate vulnerability (32 of 100). 🛈 |
|
價格種類 (Ref. 80766) |
Unknown. |
|
營養素 (Ref. 124155) |
Calcium = 119 [71, 233] mg/100g; Iron = 1.48 [0.88, 2.35] mg/100g; Protein = 16.8 [15.8, 17.9] %; Omega3 = 0.272 [0.115, 0.642] g/100g; Selenium = 87.9 [39.6, 223.6] μg/100g; VitaminA = 18.6 [7.7, 43.8] μg/100g; Zinc = 1.4 [1.0, 2.0] mg/100g (wet weight); |