The smallhead stickleback (Gasterosteus microcephalus), or resident threespined stickleback, is a fish species, which widespread in the basin of the Pacific Ocean: Japan, also Mexico. Freshwater demersal fish, up to 5.5 cm (2.2 in) length. Habits small streams, where feeds on aquatic insects and other invertebrates.[1] This taxon is regarded by some authorities as a synonym of the three-spined stickleback (G. aculeatus),[2] and others treat it as a subspecies of the three-spined stickleback, G. a. microcephalus.[3]
| Smallhead stickleback | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Gasterosteidae |
| Genus: | Gasterosteus |
| Species: | G. microcephalus
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| Binomial name | |
| Gasterosteus microcephalus Girard, 1854
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| Synonyms | |
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References
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Wikimedia Commons has media related to Gasterosteus microcephalus.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Gasterosteus microcephalus". FishBase. August 2022 version.
- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Gasterosteus". Catalog of Fishes. California Academy of Sciences. Retrieved 28 November 2022.
- ^ Christopher Scharpf. "Checklist of Freshwater Fishes of North America, Including Subspecies and Undescribed Forms". North American Native Fishes Association. Retrieved 28 November 2022.
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