Our animals

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Northern lakes and seas

The ocean

Tropical rivers and lakes

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Dwarf mormyrid

Electric eel

Cave tetra

The flooded rainforest


The interesting species of the river



Stream aquarium

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Red piranha

Red piranha

Banded leporinus

Banded leporinus

Spotted algae eater

Spotted algae eater

Red Terror

Red Terror

Yellow-headed Poison Frog

Yellow-headed Poison Frog

Red piranha

Red piranha


LatinPygocentrus nattereri
Size50 cm
FoodFish, insects and dead animals
HabitatRivers and lakes

Not evaluated

LocationThe Amazon, Paraná and Essequibo basin in South America

A razor-sharp bite

The piranha has an underbite and extremely sharp triangular teeth. With its powerful jaws, it easily bites off chunks of its prey. This is how the piranha can attack prey larger than itself.

Fish school

Birds, river dolphins and large fish – piranhas have many enemies. If there are a lot of piranhas to choose from, each individual fish has a greater chance of surviving an attack. This is why piranhas swim in shoals.

Dangerous piranhas?

Piranhas do not attack and eat people. They are scavengers and primarily live off dead fish. Watch how the aquarist is able to clean the aquarium wall from the inside.


In a piranha shoal, there are dominant and subordinate fish. In order to maintain their position in the hierarchy, the dominant fish threaten the others. If threats don’t work, they bite. This is why you often see piranhas with bite marks on their backs and tails. The wounds are not lethal.

Barking fish

Piranhas make barking noises by vibrating their swim bladders inside their bodies. They bark when fighting for prey or for the best positions in the shoal. When they threaten to bit another fish, they click their jaws.

Under the riverbank

South America's rainforest

The plants in the river

River deep

Armored predators

Conservation of species

California kingsnake

River pool


Endangered species

Lake Tanganyika

Lake Malawi