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Roestes itupiranga Menezes & Lucena, 1998

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drawing shows typical species in Acestrorhynchidae.

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Teleostei > Characiformes (Characins) 脂鯉目 (Characins) > Acestrorhynchidae (Smallscale pike characins) 狼牙脂鯉科 (Smallscale pike characins) > Roestinae
Etymology:

Issue
See Lucena & Menezes (1998) for phylogenetic relationships and Menezes & Lucena (1998) for detailed description.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 底中水層性. 熱帶

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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 檢索表 | 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)

生物學特性     字彙 (例如 epibenthic)


Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

南美洲: Rio Tocantins 流域巴西。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

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)

IUCN 瀕危狀態 (Ref. 130435)

  次級保育類動物, 見 IUCN 紅皮書 (VU) (B1ab(iii)); Date assessed: 07 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 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).