The Dace is a slim fish, almost a round fish in the middle. Its head and mouth are small and very neat looking. Small chub are often confused with large dace. But you can tell them apart very easy as the dace has a concave anal fin while the chub has a convex anal fin. Dace are common in England and Wales but rare in Scotland. In Ireland they are found only in a few rivers. They are, however, widespread in Europe and Asia.
They feed mainly on aquatic insects which they take either as nymphs or in the free flying version. The dace is normally a shoal species, dace often gather together by the thousands. Like trouts, they often give away their position by rising freely to floating insects.
Dace usually lay eggs in the late spring, choosing the shallow water at the tail end of deep pools to lay their eggs. Once the eggs are hatched, the fry hide amongst the larger stones feeding on microscopic water animals. As they grow larger they move to deeper water and rejoin the parent shoal.
The back of the dace is an olive gray. The sides are a bright, burnished silver. The underparts are white. The dorsal and tail fins are gray. The anal and pectoral fins are tinged with a warm pink.