Diplodus vulgaris belongs to the class Osteichthyes, subclass Actinopterygii, order Peciformes, suborder Pecoidei, family Sparidae.
Oval-shaped, like all the sparidae, it generally has a size around 20-25 cm in adulthood. The mouth is very small. Predominantly carnivorous feeds on small crustaceans and worms.
It is easily distinguished from the other sparidae for the two dark spots in the shape of a saddle, one in the anterior part between the dorsal fin and the eye, the other in the caudal area, the back is gray mind the hips and the belly have a silvery color.
It is common throughout the Mediterranean Sea and the eastern Atlantic Ocean to Senegal. It prefers the shallows characterized by rocky areas where it easily finds shelter inside the burrows. It is a fish that loves social life and in fact we find it in herds both among its own similar and with other fish of different species.