Commonly known as spiny chromis, this damselfish is found in the western part of the Pacific, from the Philippines to Northeastern Australia and New Caledonia. Living in coral reefs up to 65 m deep, these fish form territorial pairs during reproduction and actively guard eggs and fry.

The powderblue surgeonfish typically measures around twenty centimeters but some rare individuals reach forty. This herbivore is common from East Asia to Bali. It gets its name from the white spot under its snout.

Adult, Acanthurus olivaceus has a brownish body with a vertical orange spot. The young also have this spot, but they are fluorescent yellow. This fish feeds on fine filamentous algae covering rocks and sand.

The sohal surgeonfish is native to the Persian Gulf, but an invasive population has established itself on the Greek coasts of the Mediterranean Sea. This territorial fish mainly lives alone, feeding on algae (sargassum) in outer reefs.

The convict surgeonfish are common inhabitants of the lagoons and seagrass beds of the Indo-Pacific region. Fond of filamentous algae, these herbivorous fish are often found in mangroves and estuaries, at the edge of freshwater. They are easily recognizable by their vertical black stripes.

Acanthurus xanthopterus is a large surgeonfish found throughout the Indo-Pacific and the eastern Pacific. A benthopelagic species, it lives up to 34 years, reaches 70 cm in length, and feeds on algae, detritus, and organic matter.

The bristle-tail file-fish (Acreichthys tomentosus) is a master of mimicry, able to change the color and texture of its skin to blend in with the epiphytes of tropical seagrass beds. It plays an ecological role in controlling the proliferation of these organisms, thus protecting the photosynthesis of the seagrasses it lives in.

Amphiprion ocellaris is the best-known species of clownfish. It was popularized by Disney's productions "Finding Nemo" and "Finding Dory". It is mainly found in the eastern Indian Ocean, in the Andaman and Nicobar Islands, along the coasts of Thailand and Malaysia, as well as from northwestern Australia to Singapore.

This fish lives in a sea anemone. When two individuals move into the anemone, the dominant grows faster and becomes female. The pair become aggressive towards other clownfish, but they tolerate the presence of some invertebrates (shrimp, crab).

The pink skunk anemonefish is a tropical fish native to the Indian and Pacific oceans. Common in the Indonesian seas and the Great Barrier Reef, it is easily recognizable by its pinkish color that can range towards orange and its unique white band.

The saddleback anemonefish generally lives in symbiosis with the leather anemone or Haddon's anemone. It feeds on plants, algae, and microorganisms closely related to its host.

The European eel, A. anguilla, is a freshwater fish native to Europe. Abundant until the 1980s, it has been severely affected by overfishing. It is considered a critically endangered species in France and several neighboring countries.

Commonly known as the porkfish, this species is native to the western tropical Atlantic Ocean. During the day, this fish seeks refuge alone or in small groups in crevices, actively hunting mollusks and crustaceans at night. Young porkfish also participate in cleaning sessions with larger fish.

A small benthic predator of Indo-Pacific reefs, the warty anglerfish uses its frontal lure to attract prey and its camouflage to blend in among sponges.

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

Fertilization is internal. The male uses his anal fin to fertilize the female. The female lays a batch of eggs that the male will keep in his mouth until the young hatch. During this period, he does not feed and can die from starvation if he has not accumulated enough reserves.

The body of this fish is almost completely covered with small spines. It can swell with water and triple in size to impress predators. Its flesh is toxic. In the aquarium, it is very voracious and grows rapidly. It can damage, with a bite, the decors, pipes, diffusers ...

With its characteristic reticulated pattern, this pufferfish can be found from India to New Caledonia. Solitary in nature, it often rests on muddy bottoms during the day and feeds on invertebrates, corals, and algae at night. Like its cousins, it has the ability to inflate and produce toxins.

This fish crushes the shells of its prey with its particularly strong teeth. During the breeding season, the male digs a nest in the sand where the female lays her eggs. The male protects the eggs until they hatch. In an aquarium, this species can be aggressive towards other fish.

The Spanish hogfish changes color according to the depth: blue in shallow waters, red in deeper areas, always with a bright yellow tail.

The boarfish lives on soft or rocky bottoms in the Mediterranean and Northeast Atlantic (up to 700 meters deep). Recognizable by its laterally compressed body and pointed snout, it can quickly extend its mouth forward to capture small prey.

The blacktip reef shark is viviparous and gestation lasts about a year. The litter varies from 2 to 4 juveniles, measuring about 40 centimeters. After giving birth, the female abandons it juveniles. If disturbed, this small sized shark, may attack. It gets into the Mediterranean more and more often via the Suez Canal.