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Leptodoras linnelli  Eigenmann, 1912

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Leptodoras linnelli
Picture by Sabaj Pérez, M.H.

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Actinopterygii 輻鰭魚綱 (條鰭魚) > Siluriformes (Catfish) > Doradidae (Thorny catfishes)
Etymology: Leptodoras: Greek, leptos = thin + Greek, doras = skin (Ref. 45335).   More on author: Eigenmann.

環境 / 氣候 / 範圍 生態學

; 淡水 居於水底的; pH range: 5.8 - 7.0; dH range: ? - 18.    18°C - 22°C (Ref. 2060), preferred ?

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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).

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 23.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 37054)

簡短描述 型態特徵 | 形態測量圖

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).

生物學特性     字彙 (例如 epibenthic)


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


主要參考資料 Upload your references | 參考文獻 | 合作者 : Ferraris, Jr., Carl J. | 合作者

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. 115185)

  未評估 

CITES (Ref. 94142)

Not Evaluated

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