分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Pimelodidae (Long-whiskered catfishes)
油鯰科 (Long-whiskered catfishes)
Etymology: Sorubim: Brazilian local name, sorubim (Ref. 45335); trigonocephalus: Name from Latin 'trigonocephalus' referring to the triangular ('trigono-) shape of the head ('-cephalus) in dorsal or ventral views (Ref. 57983).
Issue
Extremely rare in collections; known from only 3 specimens.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶
South America: Madeira and Tapajós River basins, two Amazon tributaries.
南美洲: 馬得拉群島與 Tapajos 河流域, 二個亞馬遜河支流。
大小 / 重量 / 年齡
Maturity: Lm ?  range ? - ? cm
Max length : 50.7 cm SL 雄魚/尚未辨別雌雄; (Ref. 36506); 最大體重: 509.38 g (Ref. 126097)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 2; 背的軟條 (總數) : 6; 臀鰭軟條: 19 - 22; 脊椎骨: 58. Distinguished from its congeners by the following combination of characters: snout very elongated, triangular or arrowhead shaped in dorsal and ventral view; exposed portion of premaxillary tooth patch as long as wide (Ref. 57983).
與它的同類區分了藉由跟隨組合特徵: 吻非常瘦長的, 三角形的或箭頭形狀的在背部的與腹面見解; 長達廣闊暴露出來上頜骨前齒列的部分。 (參考文獻 57983)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
南美洲: 馬得拉群島與 Tapajos 河流域, 二個亞馬遜河支流。
Lundberg, J.G. and M.W. Littmann, 2003. Pimelodidae (Long-whiskered catfishes). p. 432-446. 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. 36506)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 07 November 2018
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00145 - 0.01438), b=3.08 (2.83 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.1 ±0.7 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (45 of 100).