The World Wide Fund for Nature's (WWF) fish guide is intended as a guide for consumers, the grocery trade and restaurants.
WWF has divided fish into three different categories, according to traffic light model, red, yellow and green light.
This year's fish guide includes about 95 species.
One of the species that is doing worse is Skarpsill.
The fish, which is used in Sweden to make anchovies, will end up in the yellow light this year if it is fished in the Skagerrak, Kattegat or North Sea.
No green cod
The cod also has a tough situation.
Stocks in the Baltic Sea and the North Sea have a red light, while cod in the Barents Sea and hand-caught cod outside the Faroe Islands are now getting a yellow light.
This means that there is no cod at all with a green light in this year's fish guide.
Previously, certifications such as MSC, ASC and Krav automatically got the green light in the fish guide, something they have now changed.
That is why the cod that was previously classified as green is now yellow.
Continued red light prevails for eel, American lobster and freshwater crayfish grown in China.
The North Sea shrimp also has red light in Swedish, Danish and Norwegian waters.
See more about the different categories of fish in the clip.