The health of North Sea fish stocks has experienced ups and downs, according to the latest 2025 report from the International Council for the Exploration of the Sea (ICES).
Many fish stocks are recovering after years of heavy fishing. Haddock, plaice, turbot, whiting, and witch flounder are now doing well. They are above the safe levels for breeding and are being fished at sustainable rates.
But it’s not all good news.
Some stocks, like cod, sole, and plaice in the eastern English Channel, are still struggling. These fish are below healthy levels, and fishing pressure is still too high in some cases. New fish entering the populations—known as “recruitment”—is also low for many species.
Changes in Management and Methods
A significant change this year is that Norway lobsters (Nephrops) are now being handled by a new expert group. Additionally, fish assessments for cod, haddock, and whiting now incorporate data on changing natural conditions, such as shifting mortality rates in the wild.
Data problems remain. Some countries were late in sending catch figures, and errors in the InterCatch system made scientists’ work harder. Still, the group states that none of these issues significantly impacted the overall results.
Advice Points to Caution and Hope
ICES provides advice annually to help governments establish fishing limits. In 2025, the group recommended sustainable catch levels for species like brill, lemon sole, and red mullet. Advice for cod, sole, and turbot will come later in the year.
The big picture? The North Sea is healing, but it’s not out of the woods yet. Continued care and improved data are key to maintaining healthy fish populations and fisheries.