Species FishThreespine Stickleback

Threespine Stickleback

Gasterosteus aculeatus

CommonFish
Illustration of Threespine Stickleback (Gasterosteus aculeatus)

The Threespine Stickleback is a small fish with a distinctive three spines on its back. It is known for its fascinating breeding behavior, where males build nests and perform courtship displays.

Habitat
Found in freshwater and coastal marine environments.
Diet
Primarily feeds on small invertebrates and zooplankton.
How common
Common

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