Kali

Mostly known from slow-moving, relatively shallow tributaries and minor rivers with substrates of mud, sand or gravel. Aquatic plants are only occasionally present but riparian vegetation apparently grows thickly at some localities. In the Schutunga River, part of the Mansai River drinage which is itself a tributary of the Brahmaputra in West Bengal state, In...

'N.' anguilla can be told apart from other Indian members of the genus by possessing dark flank markings which are partially or completely merged to form a lateral stripe, and an almost-complete lateral line extending to the anal-fin. Kottelat (2012) states that its generic placement requires additional study hence the genus name i...

This species has a chaotic taxonomic history with certain issues still to be resolved. While the name P. mahecola was misapplied to members of the genus Dawkinsia for over a century the fish itself has been widely misidentified as the congener P. amphibius (Valenciennes 1842). Its identity was partially resolved by Pethiyagoda and Kottelat (2005b) who demonstrated that though valid P. mahecola is not a Dawkinsia spp. but rather a smaller, relatively plain species with a single dark blotc...

This species is seen in the aquarium trade on a relatively frequent basis and is sometimes sold as 'bicolor loach' in the United States. It can be distinguished from congeners by its unique colour pattern comprising 9-10 thin, yellowish bars on a dark background in the upper part of the body, and plain whitish colouration in the lower portion.