There were at one time more than 300 native freshwater fish species in Bangladesh, but many have disappeared while others are on the verge of extinction due to habitat loss, overfishing, pollution and climate change.
Migratory freshwater fish are in big trouble. According to a new report, monitored populations of migratory freshwater fish have dropped on average by 76% since 1970, which is a higher rate of decline than among marine and terrestrial species.
