分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Characidae (Characins; tetras)
脂鯉科 (Characins; tetras) > Tetragonopterinae
Etymology: Tetragonopterus: Name from Greek words: 'Tetra' meaning four; 'gonia' meaning angle; 'pteron' for fin; referring to the evident tetragonal shape of the body (Ref. 124043).
More on author: Cuvier.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 大洋性; pH range: 5.8 - 8.5; dH range: ? - 30. 熱帶; 22°C - 27°C (Ref. 1672)
South America: Amazon basin, upper Essequibo, Orinoco, Parnaíba, Jaguaribe, Paraguay and lower Paraná river basins.
南美洲: 亞馬遜河與 La Plata 流域 (巴西與烏拉圭) 到阿根廷.(參考文獻 9086)
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 11.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 79891)
背的軟條 (總數) : 9; 臀鰭軟條: 28 - 40; 脊椎骨: 27. This species is distinguished from all its congeners by the following characters: predorsal scales 11-17 (vs. 7-9); differs from T. anostomus, T. denticulatus, T. kuluene, T. juruena by the principal teeth in dentary 4 (vs. 5-6), and larger and more robust teeth (vs. thinner and sharper); differs from T. anostomus, T. araguaiensis by the number of gill-rakers on the upper limb of the first gill arch 12-15 (vs.17-20); differs from T. anostomus by having a terminal mouth (vs. subsuperior mouth); differs from T. ommatus the maxillary teeth 1-4 (vs. 7-8) and by the presence of a conspicuous dark mark on the caudal peduncle (vs. inconspicuous mark limited to the posterior portion of the caudal peduncle); differs from T. carvalhoi by having a rounded dark mark on the caudal peduncle (vs. lozenge-shaped dark mark on the caudal peduncle); differs from T. rarus by the absence of dark longitudinal stripes on the trunk (vs. presence of such stripes); differs from T. rarus, T. georgiae having the scale rows between lateral line and pelvic-fin origin 3.5 (vs. 4.5-5.5); differs from T. denticulatus by having humeral marks separated by one or two vertical rows of scales (vs. humeral marks separated by three vertical scale rows) (Ref. 124043).
Cross section: compressed.
Consumed locally for recovery or during illness. Carnivorous (Ref. 42843).
局部地區作為病後營養補充食用。 肉食性.(參考文獻 42843)
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Is being bred in Asia and Florida in ponds (Ref. 1672).南美洲: 亞馬遜河與 La Plata 流域 (巴西與烏拉圭) 到阿根廷.(參考文獻 9086)
Silva, G.S.C., B.F. Melo, C. Oliveira and R.C. Benine, 2016. Revision of the South American genus Tetragonopterus Cuvier, 1816 (Teleostei: Characidae) with description of four new species. Zootaxa 4200(1):1-46. (Ref. 124043)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 04 March 2021
人類使用
漁業: 商業性; 水族館: 商業性
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03162 (0.01767 - 0.05660), b=2.98 (2.83 - 3.13), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.6 ±0.4 se; based on size and trophs of closest relatives
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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