Many Freshwater Fish Species Have Declined by 76 Percent in Less Than 50 Years

Migratory freshwater fish are among the most threatened animals on the planet, a new report by a coalition of environmental organizations shows. The global assessment, described as the first of its kind, found that populations of migratory freshwater fish have declined by 76 percent between 1970 and 2016—a higher rate of decline than in both marine and terrestrial migratory species.