rivière - Discover fishes living in these biotopes

It owes its name of "freshwater shark" only to the shape of its dorsal fin. It behavior and it food have nothing comparable. It acclimates easily to the aquarium.

Small barbs located around its mouth enable it to detect food. It is easy to breed in captivity. The species is very prolific, nests often have over 500 juveniles.

Reproduction of this species occurs from May to July. The female, larger, is "courted" by several males. Its toxic eggs were traditionally used as an emetic. This fish is threatened by human activities (pollution, habitat degradation ...). Reintroduction operations are regularly carried out in the rivers of Wallonia.

It sometimes lives in brackish water. It easily accommodates to life in aquariums, but unfortunately its captive breeding is still impossible.

Carcharhinus falciformis, known as the silky shark, is widely distributed in tropical and subtropical seas. However, this species is threatened due to overfishing, and is classified as vulnerable by the IUCN. Recognizable by its elongated and slender body, gray back, and white belly, this fast and aggressive predator feeds on fish, mollusks, and crustaceans.

The bull shark is listed in most tropical and subtropical seas. It is feared due to its propensity to attack humans, being responsible for most recorded fatal attacks to date. This active predator primarily hunts in murky waters. It is capable of swimming long distances and adapts to changes in salinity, frequenting estuaries, coves along the coasts, and waters with high turbidity.