Species of Concern
White Sturgeon
Acipenser transmontanus
About This Species
This large, bottom-dwelling fish inhabits big rivers and estuaries along the Pacific coast of North America, from the Sacramento to the Fraser and Columbia systems, where it feeds on invertebrates and small fish near the substrate. Anglers and river-watchers most often encounter it in deep pools and slow channels, with activity picking up during spring and autumn migrations between fresh and brackish water. Because it can live many decades and grow to enormous size, most sightings are of fish caught and released rather than observed directly.
Ethical Viewing Guidelines
- Because this species is IUCN-listed as Vulnerable and is long-lived and slow to mature, any encounter calls for real caution: minimise handling time, keep the fish in water wherever possible, and follow local catch-and-release or closed-season rules exactly, since these vary significantly between US states, Canadian provinces, and river systems and change from year to year.
- Some populations, including certain Fraser and Kootenai River stocks, carry additional endangered-species protections that prohibit any retention or require specific gear and release protocols.
- When in doubt, check the current regulations for the specific river before any close encounter rather than relying on a general rule.
VUAcipenseriformesAcipenseridae
Seasonal Activity
207,014 sightings · 2008–2026
Citizen science records via GBIF
All monthsThis month
Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Order
- Acipenseriformes
- Family
- Acipenseridae
Photo
Wikimedia Commons / Wikimedia Commons
CC-BY-SA-4.0
Occurrence data from GBIF.