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Roestes molossus (Kner, 1858)

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drawing shows typical species in Acestrorhynchidae.

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: More on author: Kner.

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: upper Madeira River basin.
南美洲: 馬得拉群島河流域上游。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 21.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 111115); 最大體重: 209.61 g (Ref. 111115)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背的軟條 (總數) : 11; 臀棘: 4 - 5; 臀鰭軟條: 43 - 47; 脊椎骨: 40. Readily distinguished from the other two species of the genus by having more branched rays on the anal fin (43-47, versus 41-43 in R. ogilviei and 38-41 in R. itupiranga). Hooks are present on the anal fin of adult male specimens of R. itupiranga and in one adult male of R. ogilviei but have not been found in males of R. molossus of comparable sizes.
輕易地與另一個區分了本屬的二個種在臀鰭上藉著具有更多的分支條.(43-47, 對 41-43 在 R. ogilviei 中與 38-41 在 R. itupiranga 中) 鉤在 R. itupiranga 的雄性成魚標本的臀鰭上與在 R. ogilviei 的一個雄性成魚中出現但是有不被發現於可比較大小的 R. molossus 的雄性。

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: 馬得拉群島河流域上游。

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)

  無危 (LC) ; Date assessed: 03 April 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





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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):  4.1   ±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 (16 of 100).