Ompok

Ompok
Ompok bimaculatus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Siluriformes
Family:	Siluridae
Genus:	Ompok La Cepède, 1803
Type species
Ompok siluroides La Cepède, 1803
Species
See text.
Synonyms
Callichrous Hamilton, 1822 Pseudosilurus Bleeker, 1857 Silurodes Bleeker, 1857

Ompok is a genus of catfishes (order Siluriformes) of the family Siluridae.^[1]

They are sometimes called "butter catfishes", but this can also refer to the African genus Schilbe of the family Schilbeidae.

Taxonomy

The genus is recognized to be paraphyletic. The species of Ompok have been grouped into species groups, such as the Ompok bimaculatus group (ie. O. bimaculatus, O. malabaricus, O. miostomus), the O. eugeneiatus group (ie. O. eugeneiatus, O. pinnatus), the O. hypophthalmus group (ie. O. hypopthalmus, O. rhabdinurus, O. urbaini), and the O. leiacanthus group (O. fumidus, O. jaynei, O. leiacanthus).^[2][3][4][5] On the other hand, the monophyly of these species groups is not strong enough to reassign species to other genera.^[6]

The O. eugeneiatus group is likely to be more closely related to Kryptopterus than the other Ompok species.^[2] According to the recent catfish checklist, O. eugeneiatus has been reclassified into Kryptopterus, however O. pinnatus has not.^[1]

Species listed in Ferraris, 2007 and a more recently described species are below:^[1]

• Ompok bimaculatus (Bloch, 1794)
• Ompok binotatus Ng, 2002
• Ompok borneensis (Steindachner, 1901)
• Ompok fumidus Tan & Ng, 1996
• Ompok hypophthalmus (Bleeker, 1846)
• Ompok jaynei Fowler, 1905
• Ompok leiacanthus (Bleeker, 1853)
• Ompok malabaricus (Valenciennes, 1840)
• Ompok miostomus Vaillant, 1902
• Ompok pabda (Hamilton, 1822)
• Ompok pabo (Hamilton, 1822)
• Ompok pinnatus Ng, 2003
• Ompok platyrhynchus Ng & Tan, 2004
• Ompok pluriradiatus Ng, 2002
• Ompok rhadinurus Ng, 2003
• Ompok sindensis (Day, 1877)
• Ompok supernus Ng, 2008^[7]
• Ompok urbaini (Fang & Chaux, 1949)
• Ompok weberi (Hardenberg, 1936)

Distribution and habitat

Ompok species are usually found in lakes and large rivers throughout South and Southeast Asia.^[3]

References

1. ^ ^{a b c} Ferraris, Carl J., Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa 1418: 1–628. http://silurus.acnatsci.org/ACSI/library/biblios/2007_Ferraris_Catfish_Checklist.pdf. 
2. ^ ^{a b} Bornbusch, Alan H. (1995). "Phylogenetic relationships within the Eurasian catfish family Siluridae (Pisces: Siluriformes), with comments on generic validities and biogeography". Zoological Journal of the Linnean Society 115: 1–46. doi:10.1006/zjls.1995.0032. 
3. ^ ^{a b} Ng, Heok Hee (2003). "A review of the Ompok hypophthalmus group of silurid catfishes with the description of a new species from South-East Asia". Journal of Fish Biology 62 (6): 1296–1311. doi:10.1046/j.1095-8649.2003.00107.x. 
4. ^ Ng, Heok Hee (2003). "Ompok pinnatus, a new species of silurid catfish (Teleostei: Siluriformes: Siluridae) from mainland Southeast Asia". Proceedings of the Biological Society of Washington 116 (1): 47–51. 
5. ^ "Catfishes of the Ompok leiacanthus (Bleeker, 1853) Species Group (Teleostei: Siluridae) from Southeast Asia, with Description of a New Species". The Raffles Bulletin of Zoology 42 (2): 531–542. 1996. 
6. ^ Ng, Heok Hee; Tan, Heok Hui (2004). "Ompok platyrhynchus, a new silurid catfish (Teleostei: Siluridae) from Borneo". Zootaxa 580: 1–11. 
7. ^ Ng, Heok Hee (2008). "Ompok supernus, a new catfish (Teleostei: Siluridae) from Borneo". Zootaxa 1877: 59–68.