分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Doradidae (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.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的; pH range: 5.8 - 7.0; dH range: ? - 18. 热带; 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: 在委内瑞拉的上面奥里诺科河 (rios Ventuari 与 Mavaca) 与 Casiquiare 河流域; 圭亚那与巴西北部的大西洋海岸流域例如 Essequibo ，德梅拉拉蔗糖与 Araguari); 在巴西的 rios Uatuma ， Tacutu 与 Demini。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 23.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 37054)
背棘 (总数) : 1; 背的软条 (总数) : 6; 臀鳍软条: 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).
上面的唇延长非常长的, 直线到弱的中间地弯曲与几乎均匀宽度具有一个钝地圆形的顶端。 除了 L. acipenserinus 以外进一步不同于所有的 Leptodoras 藉由有一个前面地延伸的脂鳍作为一个对在脂鳍的前面嵌入与背鳍的后面的嵌入之间的点中途的低细的脊。 与一些特征包括的 L. acipenserinus 区分了相对较长的前背距离 (35.5-38.7% SL), 鳃裂的内部鳃盖不完全的, 低量的侧面中央的碟 (74-81), 臀鳍形状 (长的分枝鰭條的頂端在擴大的臀鰭中經過最後分枝鰭條的頂端達不到垂直與是約略平的垂直經過最後鰭條的基底; 前面地角的被頂端定義的線, 形成一個 45-90個 ° 角有長的身體的軸), 胸鰭棘長度 19.9-26.2% 的 SL 與胸鰭棘齒狀有牙齒強烈逆向沿著後緣的多數, 末梢部地變成比較不逆向, 大小相當均勻的通常沿著末梢部的一半，最後的小齒狀突起接近端位的.(參考文獻 56896)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 在委内瑞拉的上面奥里诺科河 (rios Ventuari 与 Mavaca) 与 Casiquiare 河流域; 圭亚那与巴西北部的大西洋海岸流域例如 Essequibo ，德梅拉拉蔗糖与 Araguari); 在巴西的 rios Uatuma ， Tacutu 与 Demini。
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00528 - 0.02384), b=2.98 (2.80 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.8 ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (18 of 100).
