rivière - Discover fishes living in these biotopes

It owes its name to the small "horn" located on its lower jaw. The latter has a strategic role, but also a taste role. It captures changes in the electric field to perceive its environment. It also emits electrical discharges that rarely exceed one volt.

Gobio gobio is the most common species of gudgeon in Europe. It is a benthic fish that prefers clear waters with sandy and gravelly bottoms. During the day, it continuously sifts through the substrate in search of small invertebrates (insect larvae, crustaceans, oligochaetes, mollusks).

Its dark bands allow it to hide in the vegetation. Its reproduction in aquarium is more difficult than that of other species of tilapia. Nevertheless, it is bred in pisciculture.

It easily accommodates to life in the aquarium even if it is sometimes aggressive towards other fish. After the eggs have been laid, it is necessary to separate the adults from the eggs. It is sometimes called "jewel" tetra because of its color and the dark spot in the middle of it body.