Common Dace

Leuciscus leuciscus

The common dace (Leuciscus leuciscus) is a slender, streamlined freshwater fish reaching about 25-30 cm in length, found in rivers and streams across Europe from the British Isles and France to western Siberia. It has a bright silvery body with yellowish-green fins and a slightly forked tail, with a small, subterminal mouth adapted for surface and mid-water feeding. Dace prefer clean, well-oxygenated rivers and streams with moderate to fast current, particularly in the upper and middle reaches. They form loose schools, often seen in large numbers hovering in the current over gravel and sand substrates. Their diet consists of aquatic and terrestrial insects, larvae, small crustaceans, and plant matter. They are one of the first fish to rise to surface insects, creating characteristic small rings on the water. Freshwater divers in clear English chalk streams and European rivers regularly encounter schools of dace, which shimmer attractively in the current. They spawn in spring over gravelly shallows, with males developing small tubercles on the head and body during the breeding season.