The Sikkim government has declared ‘Cooper Mahseer’ locally named ‘Katley’ as the state fish, an official of the Fisheries department said. The official said the state government has declared Neolissochilus hexagonolepis commonly known as Copper Mahseer and locally named as ‘Katley’ as a state fish to highlight the importance of the fish and to give emphasis to its conservation measures. The decision has been taken to highlight the importance of the Katley fish and to give emphasis to its conservation measures.