Английская Википедия:Hemibagrus wyckioides

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Hemibagrus wyckioides, the Asian redtail catfish, is a species of catfish (order Siluriformes) of the family Bagridae.

Distribution

These catfish originate from the Mekong basin, and are reported from Chao Phraya, Mae Klong, and peninsular Thailand river systems.[1] There is also an introduced population in Malaysia.[2]

Appearance and anatomy

Hemibagrus wyckioides reaches a length of Шаблон:Convert TL.[1] This species is the largest Bagrid catfish in Asia, and may reach 80 kilograms.[3] The caudal fin is white when the fish is small, but it becomes bright red when it reaches about Шаблон:Convert.[1]

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.[3]

Ecology

Hemibagrus wyckioides occurs in large upland rivers, and is common in areas with rocky bottoms and irregular depths.[1][3] These fish do not migrate, but they reproduce locally and enter the flooded forest during high water in July–October.[3] H. wyckiodies feed on insects, prawns, fish, and crabs.[3]

Relationship to humans

This fish is marketed fresh as a food fish.[1] Hemibagrus are aquacultured in Asian countries.[4]

Hemibagrus wyckioides and Hemibagrus wyckii are the two members of this genus imported as aquarium fish.[4] This species will rearrange decorations in the aquarium.[5] These fish are not picky, and will eat a variety of fish foods.[5] This species is sometimes claimed to be the most aggressive freshwater fish in the world, and should be left alone.[6]

As an Invasive Species

H. wyckioides is an invasive species in Malaysia. They were introduced as a food fish and some individuals escaped from fish farms or were released illegally into rivers. It is now illegal to keep H. wyckioides in net cages in Malaysia.[2]

References

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External links

  • Vidthayanon, C. 2012. Hemibagrus wyckioides. The IUCN Red List of Threatened Species 2012. Downloaded on 22 November 2017.

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