Hilsa is the national fish of

Hilsa (Tenualosa ilisha), also known as Ilish, is the national fish of Bangladesh [1]. It is a highly prized species in the Indian subcontinent, particularly among Bengalis, who refer to it as the 'king' or 'queen' of fish [1]. While it is the national symbol of Bangladesh, it also holds significant cultural and economic importance in India, where it is designated as the state fish of West Bengal. Bangladesh is the world's leading producer of Hilsa, accounting for approximately 70-75% of the global catch. The fish is anadromous, living in the sea but migrating to freshwater rivers like the Padma for breeding [2]. In Bangladesh, the Hilsa fishery is a vital economic sector, contributing about 12% of the country's total fish production and supporting the livelihoods of hundreds of thousands of people [2].

Sources

1. [1] https://www.britannica.com/animal/ilish
2. [2] https://www.bbc.com/news/articles/c2l15j4dq9po