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Nonn Panitvong (2) Fishes of Mainland Southeast Asia (2)

Description: Wallagonia micropogon is distinguished by the following characters: 14-16 branchiostegal rays; 14-16 gill rakers on first branchial arch; 68-73 anal fin rays; small gape extending to anterior margin of eye; pelvic fin length 8.9-10.6% SL; small eye, 8.7-10.1% HL; maxillary barbels reaching to middle of pectoral-fin base; rounded pectoral fin in which the fourth branched pectoral ray is the longest; pectoral spine length 14.3-16.7% SL; dark colored body with a few pale spots forming a mottled pattern; and 63-65 vertebrae. Habitat: Enters the flooded forest during high water and stays near the edge of the forest during low water. Migrates into smaller streams to spawn. Reproduction: Oviparous, distinct pairing possibly like other members of the same family. Aquarium Care: Only juveniles can be kept in aquaria and fed on tablet food, beef heart and similar foods. Adult fish are not deemed suitable for aquarium keeping due to the size, verocity and its feeding needs for living fish. Diet: Adults feed strictly on fishes. Remarks: Cited in Fishbase and other internet sources as Wallago but in Eschmeyer's Catalog of Fishes the current status is Wallagonia micropogon (Ng, 2004) (2018). The diferences between Wallago and Wallagonia are complex and are due to the different bone structures. Wallagonia was placed by Myers (1948) and nearly all subsequent authors as a junior synonym of Wallago, but it is was later recognised as a distinct genus by Roberts, T. R. 2014.

None

None

Siluridae

Asia: Mekong River drainage between Dau Tieng in southern Viet Nam and Luang Prabang in northern Laos; also middle Chao Phraya River drainage in Thailand.

154.0cm. (5ft 1½ins)

22-26°C (71-79°F)

6.0-7.0.

Froese, R. and D. Pauly. Editors. 2009. FishBase. World Wide Web electronic publication. www.fishbase.org, version (12/2010).
Ng, H.H. 2004 Wallago micropogon: a new species of Silurid catfish (Teleostei: Siluridae) from mainland southeast Asia. Copeia (1):92-97.
Roberts, T. R. 2014 (Apr.) Wallago Bleeker, 1851 and Wallagonia Myers, 1938 (Ostariophysi, Siluridae), distinct genera of tropical Asian catfishes, with description of [fossil] Walloago maemohensis from the Miocene of Thailand. BioOne v. 55 (no. 1): 35-47. [Originally as Bulletin of the Peabody Museum of Natural History, 55 (1):35-47.]