Our animals

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Northern lakes and seas

The ocean

Tropical rivers and lakes

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The Pond

The lake

The wide creek

Select species

Select a species to read more


Water flea

Water flea

European perch

European perch

Alpine bullhead

Alpine bullhead

Three-spined stickleback

Three-spined stickleback

Swan mussel

Swan mussel

Goldfish

Goldfish

Oriental carp

Oriental carp

Belica

Belica

European crayfish

European crayfish

Bitterling

Bitterling

Gudgeon

Gudgeon

Three-spined stickleback

Three-spined stickleback

Facts

LatinGasterosteus aculeatus
Size10 cm
FoodBottom-living animals, insects and small crustaceans
HabitatLakes, ponds, creeks, estuaries and sea
IUCN

Least concern

LocationThe entire northern hemisphere
Map

Recognise it by its spines

The stickleback is a small fish with powerful spines on its back. It defends itself with its spines and raises them as soon as it feels threatened.

Different appearances

The stickleback lives in salt water, brackish water and fresh water. In salt water, the stickleback possesses bony plates on its entire body, in brackish water it has bony plates covering half of its body, and in fresh water the stickleback has bony plates only on its underside between the pelvic fins. A salt water stickleback is twice the size of the fresh water stickleback.

Colours that attract

During the breeding season, the male develops a blood-red throat and builds a nest consisting of plant material and spiggin, a protein-like secretion. The male defends the nest and lures females into it. Each female lays 100-400 eggs in the nest. When the female stickleback is filled with eggs, its body is completely silver in colour.

Catch a stickleback

The stickleback is a greedy fish and is therefore easy to catch. Attach a piece of worm, fish or prawn to a hook. If you are quick, you can also catch a stickleback using a fishing net. It's fun to compete on who is quick enough to catch a stickleback with a fishing net.


Sturgeon

Danish stream

Danish lake

Herrings in the Sound

Boulder reef in the Sound

Stone reefs

Sandy bottom

Eelgrass in the Sound

Faroese bird cliff

Seaotter

Pacific octopus

Red king crab

American lobster