Protocheirodon pi

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Protocheirodon pi (Vari 1978)

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Protocheirodon pi
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分類 / Names 俗名 | 同種異名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopteri > Characiformes (Characins) 脂鯉目 (Characins) > Characidae (Characins) 脂鯉科 (Characins) > Cheirodontinae
  More on author: Vari.

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

; 淡水 大洋性.   熱帶

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

South America: major river systems of the central and western portions of the Amazon basin including the Amazonas- Solimões, Purus, Madeira and Ucayali rivers.
南美洲: Mamore 河流域。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 3.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 38376)

簡短描述 型態特徵 | 形態測量圖

背的軟條 (總數): 9-10; 臀鰭軟條: 47 - 51. Protocheirodon pi can be distinguished by possessing four synapomorphies proposed for the Cheirodontinae by Malabarba (1998): presence of a pseudotympanum, a hiatus in the body wall musculature lateral to at least a portion of the anterior chamber of the swimbladder; absence of dark humeral spot; possession of pedunculate dentition; and presence of only a single row of regularly arranged premaxillary teeth. It differs from all species of the Cheirodontinae and indeed members of the Characiformes by the unique form of the swimbladder which has a smaller rotund anterior chamber and the posteriorly chamber elaborated into two vertically elongate, side by side, slightly inclined chambers. These modifications resulted to a unique overall pi (?)-shaped structure (Ref. 109753).

生物學特性     字彙 (例如 epibenthic)

Found in marginal areas of rivers and streams, often over sandy substrates and in still backwaters (Ref. 109753).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

南美洲: Mamore 河流域。

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

Vari, R.P., B.F. Melo and C. Oliveira, 2016. Protocheirodon, a new genus of Characidae (Teleostei; Characiformes) with the redescription of the poorly known Protocheirodon pi. Neotrop. Ichthyol. 14(2):1-7. (Ref. 109753)

IUCN 瀕危狀態 (Ref. 123251)

  未評估 

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01349 (0.00540 - 0.03372), b=3.07 (2.86 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  2.6   ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  .
瀕危性 (Ref. 59153):  Low vulnerability (10 of 100) .