(Tenualosa ilisha)
Tenualosa ilisha (ilish,hilsa,hilsa herring in Bangla,or hilsa shad) is a species of fish related to the herring,in the Clupeidae family.It is a very popular and sought-after food fish in South Asia.It is Bangladesh's national fish.The fish contributes about 12% of the total fish production and about 1.15% of GDP in Bangladesh.On 6 August 2017 Directorate of Patent,Design and Trademark (DPDT) under the Ministry of Industries,Bangladesh has declared the recognition of Ilish as the product of Bangladesh.65% of total produced Ilish in the world is produced in Bangladesh which applied for Geographical Indication (GI) in 2004.About 450,000 people are directly involved in the catching of the fish as a large part of their livelihood;around four to five million people are indirectly involved with the trade