Grey Featherback. (Notopterus notopterus). Max length 60cm
Predatory.
This small member of the Notopteridae - Featherbacks or knifefishes family of fishes is distributed throughout Asia in Indus, Ganges-Brahmaputra, Mahanadi, Krishna, Cauvery, and other river basins in southern India; Irrawaddy, and Salween; Meklong, Chao Phraya, Mekong and virtually all coastal river basins of peninsular Thailand and Malaysia; Sumatra and Java. The Grey Featherback is distinguishable by its plain brown to Silver adult coloration and the convex or only slightly concave dorsal head profile with some specimens displaying a silvery-white colouration with numerous fine grey spots on body and head. The Grey Featherback is found in clear streams and enters brackish waters and inhabits standing and sluggish waters of lakes, floodplains, canals and ponds. The Grey Featherback undertakes localized lateral migrations from the Mekong River to floodplains during the flood season and back to the mainstream or other permanent water bodies during the dry season .The Grey Featherback feeds on insects, fish , crustaceans and some young roots of aquatic plants and is active during twilight and night.
The Grey Featherback colonizes and breeds seasonally during rainy days and migrates back to permanent waters in dry season. This carnivorous predatory species is present in various fisheries and lakes throughout Thailand and is a prized food fish.
|
