分类 / Names
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Teleostei >
Siluriformes (Catfishes) >
Clariidae (Airbreathing catfishes)
Etymology: Clarias: Greek, chlaros = lively, in reference to the ability of the fish to live for a long time out of water.
More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 熱帶; 6°N - 7°S
Africa: from the coastal rivers of south Cameroon (up to the Sanaga river) southwards to the Ogooué system in Gabon and the middle Congo basin in the Democratic Republic of the Congo (Ref. 78218). Outside this area also reported from the Lualaba/upper Congo (Ref. 106245), the Kouilou-Niari in Republic of Congo (Ref. 92841), the Niger Delta (Ref. 57129) and Cross River in Nigeria (Ref. 31256, 57129), and from the Chad (Ref. 13331). A report from the Oueme River in Benin needs confirmation (Ref. 57129, 81644).
非洲: 喀麥隆南方部的沿海河川;(向上到沙那加河) 在加彭與剛果河中游系統的奧克維河系統。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 35.6 cm TL 雄鱼/尚未辨别雌雄; (Ref. 57129)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 0; 背的软条 (总数) : 81 - 95; 臀棘: 0; 臀鳍软条: 63 - 76; 脊椎骨: 65 - 67. Diagnosis: head length 19.6-24.6% SL (Ref. 81644). Head pointed in dorsal outline; snout short; tooth plates small; eyes dorsally located; "dermosphenotic" and supraorbital bones joined in specimens over 80 mm SL (Ref. 248). Frontal fontanella long and narrow ("knife-shaped")(Ref. 248, 57129, 81644). Occipital process long and oval-shaped (Ref. 248). Distance between occipital process and dorsal-fin base 4.3-10.5% SL (m = 8.1) (Ref. 81644). Gill rakers long, slender and distantly set (Ref. 248), 11-19 on 1st gill arch (Ref. 81644). Suprabranchial organ well developed (Ref. 248). Pectoral spine serrated on both sides (Ref. 57129), strongly on posterior face, weakly on anterior face (Ref. 81644). 65-67 vertebrae (Ref. 57129).
Coloration: no information on colour in life (Ref. 57129). Preserved specimens uniformly dark brown on back and sides, and yellowish-brown on belly (Ref. 57129, 81644). Vertical series of small white spots on flanks (Ref. 57129).
头部尖的在背部的轮廓中; 吻短; 眼位于背面。 额骨囱门长而狭窄的;(刀状的') 后头骨突起长而椭圆形的。 那皮蝶骨的' 与上眼窝骨结合在超过 80 mm SL 的标本中。 齿板小的。 鳃耙长的, 细长的而且远远地竖立。 鳃前的器官发展良好的。 第二感觉管的开口在侧面上规则排列的。
Facultative air-breathing (Ref. 126274); Nothing is known on the biology and reproduction of this species (Ref. 78218).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
非洲: 喀麥隆南方部的沿海河川;(向上到沙那加河) 在加彭與剛果河中游系統的奧克維河系統。
Teugels, G.G., 1986. A systematic revision of the African species of the genus Clarias (Pisces; Clariidae). Ann. Mus. R. Afr. Centr., Sci. Zool., 247:199 p. (Ref. 248)
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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=0.00776 (0.00343 - 0.01757), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (26 of 100).
