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

Neon tetra

Arowana

The interesting species of the river

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Select a species to read more


Cardinal tetra

Cardinal tetra

Neon tetra

Neon tetra

Green neon tetra

Green neon tetra

Iguazu Pleco

Iguazu Pleco

Florida crayfish

Florida crayfish

Worm line peckoltia

Worm line peckoltia

Florida crayfish

Florida crayfish

Facts

LatinProcambarus alleni
Size10 cm
FoodCrayfish are omnivores that feed on carrion , plants , etc.
HabitatSwamps and rivers.
IUCN

Least concern

LocationFlorida
Map

Male or female?

If you want to know the sex of a blue crayfish, you have to look at its claws. The males have longer and thinner claws than the females.

Hides its eggs

The female blue crayfish carries her eggs under her tail where they are well protected. If you’re lucky, she may even have some eggs now. Perhaps you can see the eggs or the little babies swimming along the bottom of the aquarium?

Babies fend for themselves

As soon as the baby crayfish hatch and let go of the tail of the female crayfish, they are able to take care of themselves and set off to explore the world.

Breeding

At the National Aquarium Denmark, Den Blå Planet, we breed our own blue crayfish in special breeding tanks which are not on display.


Arapaima

Piranha

Stream aquarium

Under the riverbank

River cichlids

The plants in the river

Angelfish

Armored predators

Discusfish

Veiled chameleon

African river

Archerfish

Endangered species

Lake Tanganyika

Lake Malawi