Neolissochilus hexagonolepis

Neolissochilus hexagonolepis
Neolissochilus hexagonolepis.jpg
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Cyprinidae
Genus: Neolissochilus
N. hexagonolepis
Binomial name
Neolissochilus hexagonolepis
(McClelland, 1839)

Neolissochilus hexagonolepis (common name: copper mahseer or chocolate mahseer[1] ) is a species of cyprinid in the genus Neolissochilus.[2] It inhabits India, Bangladesh, Nepal, Myanmar, Thailand, Malaysia, Indonesia, China, Bhutan, Pakistan and Vietnam.[2] It has a maximum length of 120.0 centimetres (3.937 ft) and a maximum published weight of 11.0 kilograms (24.3 lb).[2]

In 2021, the Indian state of Sikkim declared Copper Mahseer, locally called 'Katley' as the State fish.[3]


The fish is found in different altitudes of the state of Sikkim, mainly in the Teesta and Rangit rivers and their tributaries.[3]

Endangered Status

In 1992, ICAR-National Bureau of Fish Genetic Resources, Lucknow categorized the fish as an endangered specie. In 2014, IUCN, categorized it as an endangered specie.[3]


  1. ^ "Chocolate mahseer, Neolissochilus hexagonolepis (McClelland, 1839)" (PDF). DCFR. Retrieved 25 December 2020.
  2. ^ a b c "Neolissochilus hexagonolepis Copper mahseer". FishBase. Retrieved May 19, 2019.
  3. ^ a b c "Sikkim declares 'Katley' as State fish". Retrieved 30 October 2022.

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