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) >
Heptapteridae (Three-barbeled catfishes)
七鰭鯰科 (Three-barbeled catfishes)
Etymology: Chasmocranus: Greek, chanos, -eos, ous, and chasma, -atos = abyss, mouth opened, inmensity + Greek, kranion = skull (Ref. 45335).
More on author: Eigenmann.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶
South America: Coastal drainages from Guyana to Suriname, Negro, Orinoco and Xingu River basins.
南美洲: 海岸的從蓋亞那到蘇利南，尼格羅河，奧里諾科河與 Xingu 河流域的流域。 co 河流域，委內瑞拉。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 17.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 36914)
Captured in creeks with rocky bottoms and in areas where the water changes level (Ref. 27188). Lies hidden under rocks and Podostemaceae. Its color pattern, like that of the other Heptapterus, provides perfect camouflage. The species which occur more frequently with it are: Imparfinis minutus, Moenkhausia oligolepis, Pyrrhulina filamentosa, Characidium fasciadorsale [= Characidium zebra] and Crenicichla albopunctata (Ref. 35381).
在小溪中捕獲，底部為岩石的地方與在水改變水平的區域中.(參考文獻 27188) 躺臥在岩石與川苔草下面藏。 它的彩色斑紋, 像那另一個 Heptapterus, 提供完成式偽裝。 多出現的此魚種經常有它是: 微羽油鯰〔Imparfinis minutus〕 ， Moenkhausia oligolepis ， Pyrrhulina filamentosa, 紋背溪脂鯉〔Characidium fasciadorsale〕 [=條紋溪脂鯉〔Characidium zebra〕 ] 與 Crenicichla albopunctata.(參考文獻 35381)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
南美洲: 海岸的從蓋亞那到蘇利南，尼格羅河，奧里諾科河與 Xingu 河流域的流域。 co 河流域，委內瑞拉。
Bockmann, F.A. and G.M. Guazzelli, 2003. Heptapteridae (Heptapterids). p. 406-431. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36914)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00473 - 0.01530), b=3.00 (2.85 - 3.15), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 3.6 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
