European grayling

European grayling — Thymallus thymallus

European grayling is mainly a northern species associated with cold, clear and oxygen-rich waters, although it also occurs farther south in Sweden. This guide covers habitat, diet, spawning and the need to check local fishing rules.

What should I know about European grayling in Sweden?

European grayling (Thymallus thymallus) is mainly a northern species living in cold, clear and oxygen-rich rivers, streams and lakes. It also occurs in some brackish coastal waters. Spawning takes place in shallow water early in spring.

A grayling swimming over a rocky streambed in clear water, showing its characteristic tall, sail-like dorsal fin. — Ron de Deugd

Source: Swedish Agency for Marine and Water Management: European grayling – species and habitats · Last verified: 8 September 2026

Fishing regulations can change. The Lake Vättern restriction is time-sensitive and should be re-verified before publication and during later updates.

Distribution in Sweden

The Swedish Agency for Marine and Water Management describes grayling as mainly northern, but it also occurs farther south, including the Klarälven river system and Lake Vättern, as well as parts of the Bothnian coast.

Cold, clear and oxygen-rich habitats

Grayling lives in cold, clear and oxygen-rich rivers, streams and lakes and can also occur in brackish water.

Diet and spawning

Its diet includes insects, crustaceans and fish. Spawning takes place in shallow water early in spring.

Fishing rules can differ sharply

Fishing rules vary by water. One current example is Lake Vättern, where fishing for grayling has been prohibited since 15 March 2025. Always check the latest official rules for the exact water.