Three-spined Stickleback
Gasterosteus aculeatus
- Class
- Ray-finned fish
- Rarity
- Common
- Observations
- 6,021
- Most observed in
- 🇺🇸 United States
- Conservation
- Least Concern
Description
The three-spined stickleback (Gasterosteus aculeatus) is a fish native to most inland and 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.
Summary adapted from the Wikipedia article “Three-spined stickleback”.