Our animals

Select zone

Northern lakes and seas

The ocean

Tropical rivers and lakes

Select aquaria

Dwarf mormyrid

Electric eel

Cave tetra

The flooded rainforest


The interesting species of the river



Stream aquarium

Under the riverbank

River life

The plants in the river

River deep

Armored predators

Conservation of species

California kingsnake

River pool


Select species

Select a species to read more

Banded archerfish

Banded archerfish

Smallscale archerfish

Smallscale archerfish

West African mud turtle

West African mud turtle

Paraguay pleco

Paraguay pleco

Bala Shark

Bala Shark

Globe fish

Globe fish


LatinTetraodon lineatus
Size43 cm
FoodSnails and mussels
HabitatLakes and rivers

Least concern

LocationNorth and Central Africa

A slow swimmer

The pufferfish propels itself forward by moving its pectoral fins. It is a slow but precise method of locomotion, which is perfect when searching for prey among the cracks and stones.

A giant mouthful

The pufferfish is not a very good swimmer. So if a predator approaches, the pufferfish fills its stomach with water or air. This makes it big and round and almost impossible to swallow.

A dangerous meal

If a predator takes a bite out of a pufferfish, it will get a nasty surprise. The body of the pufferfish contains a deadly nerve toxin called tetrodotoxin, which causes paralysis and death.

A fishy beak

The teeth of the pufferfish are fused together, forming a kind of beak. With its strong jaws, the pufferfish can crush hard-shelled animals, like snails and mussels.

Freshwater pufferfish

The pufferfish is often associated with coral reefs, but of its 189 species, 30 live in fresh water. Millions of years ago, they migrated from the sea up rivers in South America, Southeast Asia and Africa.

Endangered species

Lake Tanganyika

Lake Malawi