Red - Tails Black Shark Epalzeorhynchos bicolor Picture

 
Red - Tails Black Shark  ( Epalzeorhynchos bicolour)  

     This species is native to central and western Thailand with historical records from the lower Mae Klong, lower Chao Phraya and Bangpakong rivers, all of which drain into the northern tip of the Gulf of Thailand. The type locality is ‘Small tributary of Menam Chao Phya River, near Paknampo [Nakorn-Sawan], central Thailand’ and the fish was considered abundant at the time (1931).

    It was officially declared extinct in 1996 with collection for the aquarium trade (although there appears to be no evidence to support this), agricultural and domestic pollution, plus other forms of habitat alteration such as dam construction typically considered to blame. Still, in 2011 a small, highly-localised population was observed in the Chao Phraya basin.

     In 2014 it was confirmed to be extant in the Mae Klong system as well, with a single specimen collected from the river’s main channel close to the Maeklong Dam in Muang District, Kanchanaburi Province. Its current status is thus unclear, and it is considered critically endangered pending further occurrence records. All fish traded for ornamental purposes are produced on a commercial basis, probably via the use of hormones.

Credits : 

 https://www.seriouslyfish.com/species/epalzeorhynchos-bicolor/

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