分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Heptapteridae (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
生态学
; 淡水 居于水底的. 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 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 17.0 cm SL 雄鱼/尚未辨别雌雄; (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).
在小溪中捕获，底部为岩石的地方与在水改变水平的区域中.(参考文献 27188) 躺卧在岩石与川苔草下面藏。 它的彩色斑纹, 像那另一个 Heptapterus, 提供完成式伪装。 多出现的此鱼种经常有它是: 微羽油鲶［Imparfinis minutus］ ， Moenkhausia oligolepis ， Pyrrhulina filamentosa, 纹背溪脂鲤［Characidium fasciadorsale］ [=条纹溪脂鲤［Characidium zebra］ ] 与 Crenicichla albopunctata.(参考文献 35381)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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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=0.00871 (0.00489 - 0.01552), b=3.00 (2.85 - 3.15), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
营养阶层 (Ref.
69278): 3.6 ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
