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Wetzone Butter Catfish

Ompok argestes Sudasinghe & Meegaskumbura 2016

Diagnostic Description

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Ompok argestes differs from its Indian and Sri Lankan congeners by the combination ofthe 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).
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Recorder
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Morphology

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Dorsal soft rays (total): 4; Analsoft rays: 56 - 63; Vertebrae: 48 - 52
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Biology

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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).
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Ompok argestes

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Ompok argestes, is a species of sheatfishes endemic to Sri Lanka.[1][2]

Description

Male is 14.7 cm in length. It is a demersal species of fish. Four dorsal soft rays and 56–63 anal soft rays. 48–52 vertebrae present.[2] Body and head mottled greyish brown. Predorsal profile convex uniformly. Two pairs of barbels present. Mouth terminal where lower jaw longer than the upper jaw. eyes small and without free orbital margin. There is a hazy black blotch in humeral region. scattered melanophores on Dorsal, pectoral and caudal fins. Anal fin with greyish brown mottling. Pelvic fin hyaline.[3]

References

  1. ^ a b Fernado, M.; Kotagama, O.; de Alwis Goonatilake, S. (2020) [errata version of 2019 assessment]. "Ompok argestes". IUCN Red List of Threatened Species. 2019: e.T149851149A174847815. doi:10.2305/IUCN.UK.2019-3.RLTS.T149851149A174847815.en. Retrieved 12 February 2021.
  2. ^ a b Froese, Rainer; Pauly, Daniel (eds.) (2019). "Ompok argestes" in FishBase. December 2019 version.
  3. ^ "A New Species of Silurid Catfish (Teleostei: Siluridae) Endemic to Sri Lanka". Novataxa. 4 September 2016. Retrieved 3 February 2019.
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Ompok argestes: Brief Summary

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Ompok argestes, is a species of sheatfishes endemic to Sri Lanka.

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