Phoxinus phoxinus (Vairon)

The phoxinus phoxinus is a little freshwater fish that belongs to the Cyprinidae family. It is commonly called "vairon" because of its variable color which can go from brown to green via gray and yellow. The vairon generally measures between 5 and 10 cm long and has an elongated body and laterally tablet, with a caudal bifid fin and well -developed ventral and pectoral fins.

The vairon is an omnivorous fish which feeds mainly on small insects, crustaceans and molluscs, which it finds by searching the bottom of the rivers and the streams where it lives. The vairon has also been observed feeding on plants and small fish, although this is less frequent.

The vairon is a very common fish in Europe, where it is present in many rivers in the region. It is also present in Asia, where it is common in the rivers and the lakes of the continent. The vairon is a robust fish that can tolerate relatively bad water conditions, which allows it to reproduce and develop in very varied environments.

The vairon is a very important fish for the ecosystem of rivers and streams where it lives. As a prey, it serves as food for many other fish and animals, such as piscivore birds and larger fish. As a predator, it helps regulate populations of insects and crustaceans which can otherwise become harmful. The vairon is also a fish much appreciated by sports fishermen, who consider him an interesting opponent because of his liveliness and his ability to defend himself.