A study in Hokkaido, Japan found that the number of migrating salmon this autumn decreased by 24.5% year-on-year

This is the lowest forecast figure ever, down from 17.37 million in 2017, mainly because few three-year-old fish returned throughout the prefecture last year, meaning that the return of four-year-old fish, which is the main group, is not expected to be large. There are also concerns about a severe shortage of salmon hatching eggs in the Pacific coastal waters west and east of Erimo. The number of salmon that migrated to Hokkaido in the fall last year (coastal catch and inland river catch combined) was 22.57 million, down 35% from the previous year and far below the forecast of ...