This large unicorn fish is a common inhabitant of lagoons and reefs with strong currents. Primarily diurnal, it feeds on brown algae like sargassum. It can be encountered in small groups or solitary.

Unlike many other sea Sparidae (sea bream, bream ...), it lives near the surface. It is sometimes found in ports where it feeds on waste. In some countries, it is highly prized by fishermen although its flesh is rather soft.

It is particularly smart. In case of danger, it can cover up or release a "cloud" of ink. In general, the male dies shortly after mating. The female protects the eggs until they hatch and then it dies. Its flesh is highly appreciated.

Easily recognizable by its shape and blue color, this triggerfish naturally lives in groups in the turbulent waters near coral reefs. During the breeding season, males and females pair up to build a nest. They fiercely defend this small territory against other fish species and, more broadly, against any intrusion, even human.

The rainbow trout comes from the western United States where she was raised intensively since the beginning of the twentieth century. It was introduced in many parts of the world. In Europe, it sometimes supplants the native trout. In Wallonia, its introduction is prohibited in the natural environment.

During breeding, the male digs a hole in the sand. A female will deposit it eggs that it will shelter in its mouth. After hatching, the young remain close to the adults. In case of danger, they take refuge in the mouths of their parents. It is bred in pisciculture.

It can breathe oxygen from the air, it stays at least half an hour under the surface between two breathes. Its tapered pectoral fins have a tactile and sensory role. Because of its large size, it is not recommended for the aquarium of a specimen.

Like all crustaceans, it is forced to mutate to grow. Unlike lobster, it has no large claws, but its shell is covered with thorns. It uses its long antennae as "whips" to protect themselves from predators. Those are captured using traps or nets.

The palette surgeonfish sports a pair of venomous, erectable scalpel spines at the base of its tail, used for self-defense against predators. It primarily dwells in small groups within coastal reefs. Its electric blue color inspired the character of Dory in "Finding Nemo" and "Finding Dory".

It is one of the most known species to aquarists. It breeds easily in captivity, but it is too often taken from the wild. For several years, it has started to being raised in it home region. It became a source of income for local people.

Its attractive coloring is mainly due to the refraction of light on the scales. They breed easily in aquariums.

The juveniles of this species have very long fins. They often let themselves drift with the currents in all positions, so they look like dead leaves. Adults sometimes gather in huge schools.

The Emperor Angelfish is found from the Red Sea to the Great Barrier Reef. Juveniles hide under reef overhangs or in holes in outer lagoons, while adults prefer caves in coral-rich areas. These fish feed on sponges and form pairs for reproduction.

The peach fairy basslet is found from the Red Sea to the Great Barrier Reef. Juveniles hide under reef overhangs or in holes in outer lagoons, while adults prefer caves in coral-rich areas. These fish feed on sponges and form pairs for reproduction.

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.

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.