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Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Pimelodidae (Long-whiskered catfishes)
Etymology: Sorubim: Brazilian local name, sorubim (Ref. 45335); elongatus: Named for its extremely elongate shaped head and body.

Environment / Climate / Range Ecology

Freshwater; demersal. Tropical

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 30.0 cm SL male/unsexed; (Ref. 40631)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 6; Anal spines: 0; Anal soft rays: 20 - 25; Vertebrae: 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.

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

South America: Amazon, Essequibo, and Orinoco River basins (Ref. 36506); a disjunct record from Río Mamore, Bolivia (Ref. 57983).

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).

Main reference Upload your references | References | Coordinator | Collaborators

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.

IUCN Red List Status (Ref. 90363)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: subsistence fisheries; aquarium: commercial

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00497 (-0.19234 - 0.20228), b=3.11 (3.00 - 3.23), based on LWR estimates for this family-BS (Ref. 93245).

Trophic Level (Ref. 69278): 4.0 ±0.7 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Vulnerability (Ref. 59153): Low to moderate vulnerability (32 of 100) .

Price category (Ref. 80766): Unknown.

Sorubim elongatus Littmann, Burr, Schmidt & Isern, 2001