fleuve - Discover fishes living in these biotopes

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 fish is well known in our ponds. The reproduction in this species occurs from May to June, the females lay up to 200,000 eggs on vegetation near the banks. This fish can hybridize with many other species that breed at the same time as it (Roach, Bremen, Bleak ...).

It is a nocturnal hunter. It lives in the bottom of the rivers, where it remains upright to hide among the reeds. It fits well in a large aquarium. But we must avoid leaving it with small fish that it could eat.

The discus, an oviparous fish from the Amazon regions, reproduces at the beginning of the flood season, giving its young a better chance of survival. It naturally resides in slightly acidic waters, favoring flooded forest areas to protect and feed itself.

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.

It is very easy to keep in aquariums, it reproduces easily. Eggs are laid in the vegetation and hatch after 30 hours. The alevin are very active and like to eat.

It has no dorsal fin, it swims by waving it long anal fin. It is smaller than other species of knife fish. It lives in the night. It acclimatizes very well in the aquarium and can live there very long.

The female is larger than the male. It is an ovoviviparous species: the male fertilizes it partner through an oviduct. The eggs hatch in the body of the female, where they complete their development. Each female gives birth to 10 or 20 juveniles. It easily accommodates to life in the aquarium, but it may chew on plants and be aggressive towards other fish species.