分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Issue
See Lucena & Menezes (1998) for phylogenetic relationships and Menezes & Lucena (1998) for detailed description.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 熱帶
South America: upper and middle Amazon basin and rivers Essequibo, Branco and Negro.
南美洲: 上游與中游的亞馬遜河流域與河 Essequibo ， Branco 與尼格羅河。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 18.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 33012)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 11; 臀棘: 4 - 5; 臀鳍软条: 41 - 43; 脊椎骨: 37 - 40. This species is distinguished from R. molossus by having fewer branched anal-fin rays (41-43, versus 43-47). It differs from R. itupiranga by having more anal-fin rays (41-43, versus 38-41), fewer scale rows between lateral line and anal-fin origin (15-16, versus 18-19) and fewer scale rows around caudal peduncle(27-28, versus 30-31).
这种被与 R. molossus 区分藉着具有较少数分枝的臀鳍棘条.(41-43, 对 43-47) 它有别于 R. itupiranga 藉着具有更多的臀鳍棘条 (41-43, 对 38-41), 尾柄的周围在侧线与臀鳍起源 (15-16, 对 18-19) 与较少的鳞片列之间的较少的鳞片列.(27-28, 对 30-31)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: 上游與中游的亞馬遜河流域與河 Essequibo ， Branco 與尼格羅河。
Menezes, N.A. and C.A.S. de Lucena, 1998. Revision of the subfamily Roestinae (Ostariophysi: Characiformes: Cynodontidae). Ichthyol. Explor. Freshwat. 9(3):279-291. (Ref. 33012)
人类利用
工具
特别资料
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网络资源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00182 - 0.01257), b=3.13 (2.90 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 4.1 ±0.7 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 vulnerability (13 of 100).
