It is found between 30 and 200 meters deep. It lives near cavities where it takes refuge in case of danger. The male has large pectoral fins and is surrounded by a harem of a dozen females. If it dies, the dominant female becomes a male (protogynous hermaphroditism).

It owes its name of pomfrets to its coloration reminiscent of a chestnut. In spring, males defend a nesting area and ventilate the eggs until they hatch. Juveniles are electric blue and live in small groups.

Large males can be recognized by their green backs, their white bellies and their broad orange line on the flanks. The coloration, associated with a characteristic swimming, is used to impress other males and attract the attention of females, but also predators.

Dicentrarchus labrax also known as "european bass", sea bass" or "loup de mer" is an emblematic fish of European coasts. The species has been known and appreciated for its meat since the Antiquity. Unfortunately, it is threatened by overfishing. Today, most of the bars consumed in Europe are raised in aquaculture farms.

It differs from the green wrasse (Labrus viridis) with a blue border on the fins. During breeding, the females visit male territories and mate with the most attractive. Around the age of 4 years, they change sex (protogynous hermaphroditism), but not color.

The nocturnal animal also feeds on dead animals. Its bite is not venomous, but very painful. It body, completely smooth (scales, flippers ...) allows it to slide easily backwards into a hole. It is one of the ingredients of the "bouillabaisse".

It is very aggressive towards fishes from its species, except during the breeding season: In the spring, at nightfall, a pair forms and performs a complex courtship. It is a synchronous hermaphrodite: male and female at the same time. Very curious, it often approach divers.

The Mediterranean parrotfish is a rare representative of the Scaridae in temperate zones. It is native to the warm waters of the south and east Mediterranean. It feeds mainly on algae and inhabits rocky areas up to a depth of 30 meters.

It differs from other species of wrasses because of the elongated shape of it head. Those who live in the Posidonia meadows (underwater flowering plants) are entirely green. The male builds a nest of seaweed and gravel where it distributes the eggs until they hatch.

During breeding season, its color becomes brighter and it builds a large nest with plant debris. It attracts the attention of females by performing a characteristic swimming. It will mate with several of them and it will protect and ventilate the eggs until they hatch.

It is one of the most colorful Mediterranean fish. The female has a black spot on the dorsal fin. The stain will disappear and its color becomes more vivid when it will change sex (hermaphroditism protogynous). It is more abundant in the northern Mediterranean.