| Gasterosteus | |
|---|---|
| |
| Gasterosteus microcephalus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Scorpaeniformes |
| Family: | Gasterosteidae |
| Genus: | Gasterosteus Linnaeus, 1758 |
| Type species | |
| Gasterosteus aculeatus Linnaeus, 1758
| |
| Synonyms | |
Gasterosteus is a genus of ray-finned fishes belonging to the family Gasterosteidae, the sticklebacks. These fishes are found in freshwater, brackish water and marine habitats in the Holarctic region.