分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Acestrorhynchidae (Smallscale pike characins)
狼牙脂鯉科 (Smallscale pike characins) > Roestinae
Etymology:
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: Rio Tocantins basin, Brazil.
南美洲: Rio Tocantins 流域巴西。
大小 / 重量 / 年齡
Maturity: Lm ?  range ? - ? cm
Max length : 14.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 33012)
簡短描述
型態特徵 | 形態測量圖
臀棘 4-5; 臀鰭軟條: 38 - 41; 脊椎骨: 39. Roestes itupiranga has fewer branched anal-fin rays (38-41) than R. molossus (43-47) and than R. ogilviei (41-43). Can be further distinguished from R. ogilviei by having more scale rows between lateral line and anal-fin origin (18-19, versus 15-16) and more scale rows around caudal peduncle (31-31, versus 27-28).
Roestes itupiranga 超過 R. molossus(43-47) 與 R. ogilviei 有較少的分枝臀鰭棘條 (38-41) 。 (41-43) 可能是與進一步區分的 R. ogilviei 尾柄的周圍藉著具有在側線與臀鰭起源 (18-19, 對 15-16) 與更多的鱗片列之間的更多的鱗片列.(31-31, 對 27-28)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: Rio Tocantins 流域巴西。
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)
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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).
營養階層 (Ref.
69278): 4.0 ±0.7 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).