Department of Aquatic Resources

Marine extreme weather

Marine heatwaves can affect fish and other organisms, and extreme storms can limit fishing opportunities. Climate change increases the occurrence of such extreme weather at sea. During 2024-2026 we

Färgernas Rike

The Kingdom of Colors is an innovative research project aimed at developing new methods to monitor algal toxins in marine environments using visual signals such as algae pigmentation and patterns.

Department of Aquatic Resources

Our research focuses on fish and shellfish in the seas, lakes and rivers. We monitor the aquatic environment, developing the methods and know-how for sustainable use of aquatic resources.

The Fisheries Research Station in Älvkarleby

SLU's activities at the Fisheries Research Station in Älvkarleby are being phased out. The last release of farmed salmon and sea trout will take place in the summer of 2025. In November 2025, the

Crayfish and crayfish fishing in Sweden

Sweden has two freshwater crayfish species: the native noble crayfish and the introduced signal crayfish. Noble crayfish populations have declined sharply since the early 1900s, mainly due to

Kräftodlingens ABC

Interested in farming noble crayfish? Kräftodlingens ABC ("Crayfish Farming ABC") is an educational package that includes a handbook, information about noble crayfish, crayfish plague, available

Flodkräfta

The noble crayfish (Astacus astacus) lives in shallow waters in the littoral zone of lakes, ponds, and smaller watercourses. The noble crayfish prefers steep shorelines where it digs deep burrows or

Signalkräfta

Like the noble crayfish, the signal crayfish (Pacifastacus leniusculus) lives in shallow waters in the littoral zone of lakes, ponds, and smaller watercourses. The signal crayfish ( Pacifastacus

Så skiljer du flodkräfta från signalkräfta

Is it a signal crayfish or a noble crayfish you’ve caught? It’s easy to tell apart, there are four clear distinguishing features! Noble Crayfish On the noble crayfish, you will find a row of small

Kräftpest

Crayfish plague is a disease that only affects freshwater crayfish. It is a parasitic fungal infection that spreads through spores between the crayfish. Both signal crayfish and noble crayfish can be

Hotade och främmande arter

We identify, measure, and analyze threats to biodiversity, proposing and evaluating the impact of measures to mitigate biodiversity loss. Our work focuses on endangered species like the noble

FishLinks

The FishLinks project is a socio-ecological study in tropical seascapes where we investigate whether tourism in Tanzania contributes to unsustainably high fishing pressure, and if so, in what way.