Three-spined Stickleback
Gasterosteus aculeatus
Photo: kisaland / CC BY-NC 4.0 / iNaturalist
The Three-spined Stickleback is a small fish with three dorsal spines. Some populations migrate between the sea and freshwater, while landlocked populations remain in freshwater throughout their lives. Breeding males build nests from plant material and guard the eggs and young. Landlocked populations occur locally in cool springs and other waters in Hokkaido and Honshu. Habitats at Hakusan Pond in Fukushima, the Taya River in Tochigi, and Hongan-shozu in Fukui are designated Natural Monuments.
- Scientific name
- Gasterosteus aculeatus
- Group
- Fish
- Prefectures
- Fukushima, Tochigi, Fukui
- 日本語
- イトヨ
- 简体中文
- 三刺鱼
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Frequently asked questions
The Three-spined Stickleback is designated as a species without a fixed area and lives in places such as Fukushima, Tochigi, Fukui.
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