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South America: Amazon, Essequibo, and Orinoco River basins (Ref. 36506); a disjunct record from Río Mamore, Bolivia (Ref. 57983). 南美洲: 亞馬遜河， Essequibo 與奧里諾科河流域;(參考文獻 36506) 來自 Rio Mamore ，玻利維亞的一個分離的記錄.(參考文獻 57983)
大小 / 重量 / 年齡
成熟度: Lm? range ? - ? cm Max length : 32.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 111115); 最大體重: 260.00 g (Ref. 111115)
背的軟條 (總數) : 6; 臀棘: 0; 臀鰭軟條: 20 - 25; 脊椎骨: 44 - 46. Laterally positioned eyes, visible dorsally and ventrally; in adults, the diameter is 2.2-3.3 times into interorbital width. Inner mental barbels usually posterior to gular apex, rarely even with it, and never reaching fleshy margin of opercle. Outer mental barbels longer, extending beyond the origin of pectoral fins. Maxillary barbels variable in length, extending to pelvic fins or beyond. Pelvic fins when depressed reaching approximately halfway from anus to anal-fin origin. Body shape (shape guide): elongated; Cross section: circular. 位於側面的眼, 看得見的背面而且腹地; 當成魚時，直徑是 2.2-3.3 倍進入眼間骨寬度之內。 內部的神經觸鬚通常在喉部的尖頂後面,很少地與它平的, 而且從不達到鰓蓋的肉質邊緣。 外部的神經觸鬚更長的, 延伸超過胸鰭的起源。 上頜骨觸鬚被延伸至腹鰭的可變的長或超過。 腹鰭當扁平的從肛門到臀鰭起源半路地大約達到。
Collected from both white and black waters; found in floodplain lakes, small creeks (or caños) to large rivers and tidal rivers; on sand, mud, and clay substrates associated with vegetation (e.g. tall reeds, emergent grasses, and root masses of stream-side trees). Apparently nocturnal and hide in groups along stream margins during the day (Ref. 40631).
Littmann, M.W., B.M. Burr, R.E. Schmidt and E.R. Isern, 2001. Sorubim elongatus, a new species of catfish (Siluriformes: Pimelodidae) from tropical South America syntopic with S. lima. Ichthyol. Explor. Freshwat. 12(1):1-16. (Ref. 40631)
