The caribbean sergeant major is a tropical fish associated with coral reefs and rocky tropical areas of the western Atlantic Ocean. This small schooling fish has a morphologically very close cousin throughout the Indo-Pacific region: A. sexfasciatus.

The chocolate surgeonfish, A. pyroferus, gets its name from its color gradient. In addition to this morphological characteristic, this typically solitary species in adulthood is known for its lively and bold nature.

The skeleton of this sturgeon is made of cartilage. it barbs, on the front of it mouth, allow it to search for food in the sand. As it is the case for the larger species (beluga, Sevruga ...), its eggs are used for the production of caviar.

Clark's anemonefish is found in a large part of the Indo-Pacific region, going by over a dozen names depending on the region. Capable of living in numerous species of anemone, it is the least picky anemonefish in terms of hosts.

Unlike its famous cousin from the movie Finding Nemo, this tomato clownfish is reddish with a darker body. It has a single white vertical stripe just behind the eye. Young individuals have one to two additional stripes which they lose as they grow.

The false skunk striped 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 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.

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).

Blackspotted puffer frequents tropical marine waters from East Africa to Micronesia. It is common in coastal reefs with rich invertebrate growth on outer slopes. Often solitary but also in pairs, it feeds on corals, crustaceans, mollusks, sponges, tunicates, and algae. Like its congeners, it is capable of producing and accumulating toxins such as tetrodotoxin and saxitoxin in its skin, gonads, and liver.

Arothron stellatus is one of the giants among pufferfish. It is easily recognizable by its dark markings. Typically solitary, this species frequents sandy areas of lagoons and offshore reefs. It is a copepod predator that supplements its diet with various crustaceans and fish eggs.

It must be kept in a good sized aquarium with efficient filtration, as it is used to chewing it food and scattering it. It is sometimes aggressive toward other species. It breeds easily in captivity. There are several varieties.

It often looks for food at the bottom. At nightfall, it rises to the surface to eat zooplankton. It sometimes is subject to overfishing in the Mediterranean. It is also used as a bait to catch tuna.

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.

This fish is very shy and it is easy to approach it when diving. it eyes are hidden by transverse black lines. It has a black eyespot on the dorsal fin, which attracts the attention of predators to parts of its body where there are no vital organs.