The large pectoral fins of this fish serve as a fish net to capture prey. Its color (alternating dark and light bands) indicate to predators that it is poisonous: there are poison glands in the skin covering its spines. It can cause serious or fatal accidents.

The stripes of it body allow it to hide. Parents lay their eggs in the vegetation, and provide for their offspring long parental care (custody, ventilation ...). Very popular among aquarists: there are many color varieties obtained through breeding.

Thanks to its small size, it is an ideal fish for beginner aquarists. It is easy to maintain and reproduce in the aquarium.

The cherry barb is a small freshwater fish endemic to the wet region of the lowlands in Sri Lanka. The males, cherry-colored, have long been intensively captured for the aquarium trade. The export of this fish is now better regulated, but it remains vulnerable to changes in its environment. The main causes: agricultural pollution, hydroelectric projects, and deforestation.

It is carnivorous, its sharp teeth have earned it the local name. (Pira = fish, Nha = tooth). Its dangerousness was often exaggerated: it serves as prey of many animals (alligators, giant otter ...). Piranhas are especially dangerous for humans in the dry season, when they lack food.

This fish is named for its color that looks like a picture of contemporary art. Their powerful jaws enable it to crush the shells and the shells of its prey. In case of danger, juvenile hide in empty shells.

This moray is narrower than most other species. Over time, the male becomes a female (protandrous hermaphroditism). This sex change is accompanied by a color change. This moray adapts easily to life in the aquarium.

The roach is a very common fish in our ponds. Breeding occurs from April to June, the female lays between 150 000 and 200 000 eggs on vegetation, gravel ... Its numbers are increasing throughout Europe. It benefits from warming waters in urban areas and channeling rivers.

This squirrelfish is recognizable by its fine horizontal white stripes with silvery highlights on a predominantly red body. Like its counterparts, it is a nocturnal, exclusively carnivorous fish. It particularly preys on mollusks and small crustaceans living among the rocks.

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 reproduction of the catfish occurs from June to August. The female lays about 60 000 large eggs in the vegetation, the male protects them for 10 days. Native to Eastern Europe, it was introduced in all major European rivers. In the Meuse, its size can exceed two meters long.

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.

By day, these fish form a small group and remain free from branched corals. At night, the group dislocates and specimens go down near the bottom for food. During the incubation period, the eggs are kept in the mouth of the male. The latter fasts until they hatch.

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.

The sailfin snapper frequents sandy bottoms in the immediate vicinity of coral reefs. This usually solitary fish preys on other fish, crustaceans, and various mollusk species. It is a tropical fish occasionally targeted by fishermen.

The pair defends its eggs and alevins against potential predators. The juveniles feed on the mucus secreted by the parents. Breeding in aquarium is possible, but complicated. There are many colorful varieties that sometimes reach exorbitant prices.

The picturesque dragonet is easily recognized by its brown ocellated spots. Still poorly documented, this fish is a common inhabitant of the coral reefs of Indonesian and Philippine seas. Like its counterparts, these fish form pairs and feed on microcrustaceans that they pick from the substrate.

The skin of this species secretes a toxic mucus for predators and parasites. This fish is territorial and fights involving males are common. To lay eggs, both partners embrace and rise to the surface to release their reproductive cells that will be mixed by sea currents.

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.

This species is particularly resistant to temperature changes, lack of oxygen and even some chemical pollution. The pelvic fins of the male are larger than those of the female. Contrary to popular belief, the mucus secreted by the skin does not heal other fish.