分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Doradidae (Thorny catfishes)
陶樂鯰科 (Thorny catfishes) > Doradinae
Etymology: Leptodoras: Greek, leptos = thin + Greek, doras = skin (Ref. 45335).
Eponymy: George Linnell was an executive of the Essequibo Exploring Company. He provided Eigenmann with boats and crewmen for his expedition to British Guiana (Guyana). (Ref. 128868), visit book page.
More on author: Eigenmann.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 居於水底的; pH range: 5.8 - 7.0; dH range: ? - 18. 熱帶; 18°C - 22°C (Ref. 2060)
South America: Upper Orinoco (rios Ventuari and Mavaca) and Casiquiare River basin in Venezuela; Atlantic Coast drainages of the Guianas and northern Brazil such as Essequibo, Demerara and Araguari); the rios Uatumã, Tacutu and Demini in Brazil (Ref. 56896). Recently collected from the rio Tiquié basin (right bank tributary of the upper rio Negro) in the Amazonas State and from the upper rio Aripuaña (tributary of the rio Madeira) in Mato Grosso State, Brazil, extending the known distribution of this species into the western limits of the Brazilian Shield (Ref. 79526).
南美洲: 奧里諾科河 (Rio Mavaca) ， Essequibo 與德梅拉拉蔗糖河流域上游與北部 (左邊岸堤) 亞馬遜河下游的支流。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 23.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 37054)
背棘 (總數) : 1; 背的軟條 (總數) : 6; 臀鰭軟條: 12 - 16. Upper labial extension very elongate, straight to weakly curved medially and nearly uniform in width with a bluntly rounded tip. Differs further from all Leptodoras except L. acipenserinus by having an adipose fin extending anteriorly as a low thin ridge to a point midway between the anterior insertion of the adipose fin and the posterior insertion of the dorsal fin. Distinguished from L. acipenserinus by a number of characters including a relatively longer predorsal distance (35.5-38.7% SL), inner flap of gill opening incomplete, lower sum of midlateral plates (74-81), anal-fin shape (tip of longest branched ray falls short of vertical through tip of last branched ray in extended anal fin and is more or less even with vertical through base of last ray; line defined by tips angled anteriorly, forming a 45-90° angle with long axis of body), pectoral-fin spine length 19.9-26.2% of SL and pectoral-fin spine dentation with teeth strongly retrorse along majority of posterior margin, becoming less retrorse distally, size relatively uniform along distal half, last denticulation usually subterminal (Ref. 56896).
Body shape (shape guide): elongated.
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 奧里諾科河 (Rio Mavaca) ， Essequibo 與德梅拉拉蔗糖河流域上游與北部 (左邊岸堤) 亞馬遜河下游的支流。
Sabaj, M.H. and C.J. Ferraris Jr., 2003. Doradidae (Thorny catfishes). p. 456-469. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37054)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 30 July 2020
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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 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01230 (0.00587 - 0.02579), b=2.96 (2.78 - 3.14), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 2.8 ±0.4 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (18 of 100).
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