Cat-eLog Right Arrow Siluridae Right Arrow Ompok

Jump to next section Cat-eLog Data Sheet
Scientific Name Ompok karunkodu  Ng, 2013
Common Name
Type Locality India: Tamil Nadu, Amaravathi River in the vicinity of Amaravathi Dam, 10°24'N 77°16'E.
Pronunciation Awm pok - ka ron ko du
Etymology The etymology of Ompok is unclear. It is believed to be a corruption of the Indonesian name for mid-sized silurid catfishes, limpok. The specific epithet comes from the Tamil karun, a contraction of karuppu, meaning black and kodu, meaning line. This refers to the dark midlateral stripe running along the side of the body in this species. Used as a noun in apposition.
Jump to next section Species Information
Identification The catfish genus Ompok La Cepède, 1803, consists of medium-sized silurid fishes found in inland waters throughout South and Southeast Asia. The genus is traditionally diagnosed by the presence of a short dorsal fin with 4 rays, strongly forked caudal fin, subcutaneous eye that is set immediately posterior to the mouth rictus and two patches of palatal teeth (Weber & de Beaufort, 1913). Bornbusch (1995) showed that Ompok, as currently understood, is probably paraphyletic.

Ompok karunkodu can be distinguished from all congeners in the Indian subcontinent in having a markedly convex predorsal profile (vs. with a slight or distinct concavity in the supraethmoidal or supraoccipital region), and a unique combination of the following characters: prognathous lower jaw causing anterior profile of head to appear rounded when viewed laterally, maxillary barbel reaching to base of pectoral-fin spine,eye diameter 13.7% HL, head width 13.0% SL, body depth at anus 14.2% SL, 65 anal-fin rays, caudal peduncle depth 5.0% SL, caudal-fin length 12.6% SL, caudal fin with rounded lobes, 54 vertebrae, and dark midlateral stripe running along sides of body.
Sexing Males have strong serrations on the posterior edge of the pectoral spine (females lack these serrations.
Jump to next section Habitat Information
Distribution Known from the Amaravathi River (a right-hand tributary of the Kaveri River) in southern India.
Indian waters, Kaveri (click on these areas to find other species found there)

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Jump to next section Husbandry Information
Breeding Reports There is no breeding report.
Jump to next section Further Information
References Zootaxa 3694 (no. 2), pp 162, Fig. 1.
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Last Update 2014 Aug 24 03:37 (species record created: 2013 Aug 02 00:43)