just type fancy fish emporium on the internet and u vil get exactly where it is located on CIT rd..this shop is quite known..some fish here r good but they charge way too much..there is no doubt that grand sumo is really hard to find in calcutta..i personally like hikari anyways..the grand sumo here should be the genuine one..the best way is to just give them a ring and find out..all info abt the shop is available on the internet.