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Ompok argestes Sudasinghe & Meegaskumbura, 2016 Wetzone butter catfish |
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photo by
Ramani Shirantha |
| Family: | Siluridae (Sheatfishes) | |||
| Max. size: | 14.7 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | Asia: Sri Lanka. | |||
| Diagnosis: | Dorsal soft rays (total): 4-4; Anal soft rays: 56-63; Vertebrae: 48-52. Ompok argestes differs from its Indian and Sri Lankan congeners by the combination of the following characters: body color pattern mottled; predorsal profile uniformly convex; maxillary barbels reach or extend slightly beyond the base of the dorsal fin; eye diameter 14.2-17.1% head length; body depth at anus 19.8-22.3% standard length (SL); head width 14.3-16.8% SL; caudal peduncle depth 5.6-6.5% SL; and vertebrae 48-52 (Ref. 116164). | |||
| Biology: | Found among submerged roots and marginal vegetation in slow-flowing, shaded regions of rivers and streams with a substratum of mud or leaf debris (Ref. 116164). | |||
| IUCN Red List Status: | Vulnerable (VU); Date assessed: 07 August 2019 (B1ab(iii)+2ab(iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||