Species

Gasterosteus aculeatus (Threespine stickleback)

Gasterosteus aculeatus. Photo: (c) chris buelow, some rights reserved (CC BY-NC)

iNaturalist • Wikipedia

The three-spined stickleback (Gasterosteus aculeatus) is a fish native to most inland coastal waters north of 30°N. It has long been a subject of scientific study for many reasons. It shows great morphological variation throughout its range, ideal for questions about evolution and population genetics. Most populations are anadromous (they live in seawater but breed in fresh or brackish water) and very tolerant of changes in salinity, a subject of interest to physiologists. It displays elaborate…

— Wikipedia

Sightings

Where in Humboldt

Discussion

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