Asian Redtail Catfish

Hemibagrus wyckioides reaches a length of 130 centimetres (51 inches) TL. This species is the largest Bagrid catfish in Asia, and may reach 80 kilograms (180 lb). The caudal fin is white when the fish is small, but it becomes bright red when it reaches about 15 cm (6 in). Hemibagrus wyckii bears a resemblance to H. wyckioides, however, H. wyckioides lacks serrations on the dorsal fin spine, has a shorter dorsal fin base, and shorter maxillary barbels.

These catfish originate from the Mekong basin, and are reported from Chao Phraya, Mae Klong, and peninsular Thailand river systems. There is also an introduced population in Malaysia.

Hemibagrus wyckioides occurs in large upland rivers, and is common in areas with rocky bottoms and irregular depths. These fish do not migrate, but they reproduce locally and enter the flooded forest during high water in July–October. H. wyckiodies feed on insects, prawns, fish, and crabs.