Longstriped blenny, Parablennius rouxi, commonly known as white bavosa is a small marine fish belonging to the Blenniidae family.
Distribution and habitat
This species is widespread in the northern Mediterranean Sea and in the North-East of the Atlantic (from Portugal to England), from a few meters up to 50 meters deep on hard seabeds, especially in coralligenous.
Typical appearance of a Blenniidae (though rather thin and slender) but easily recognizable by the livery. The body is typically white in color with a black longitudinal band, sometimes reddish, the snout carries some blue lines. The eyes are big, surmounted by two branched supernatural tentacles 3 or 4 times. It reaches 8 centimeters.
It is a rather confidant species and is easily approached by divers.
Sexual dimorphism almost absent: the male is only slightly larger than the female. Oviparous. The reproductive period is from May to July. The male guards the den where the female has laid her eggs.
It feeds on algae, perifiton, polychaete and small crustaceans, especially copepods.