Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Anguilliformes
- Family
- Acipenseridae
- Genus
- Huso
- Species
- huso
Habitat
Beluga sturgeon primarily inhabit large rivers, estuaries, and coastal waters of the Caspian, Black, and Azov Seas, preferring deep, slow-moving environments with sandy or muddy bottoms. They are anadromous, spending most of their lives in saltwater but migrating to freshwater rivers for spawning. These fish thrive in temperate regions with access to both marine and riverine habitats.
Diet
Juvenile Beluga sturgeon feed on insects, crustaceans, and small fish in riverine areas, while adults primarily consume larger prey such as herring, anchovies, and gobies in marine environments. They are bottom-feeders, using their barbels to detect and suck up food from the substrate, and they hunt opportunistically both during the day and night. Feeding intensity increases in warmer months when food is more abundant.
Behavior
Beluga sturgeon are mostly solitary or form loose groups, exhibiting strong migratory patterns as they travel between seas and rivers for feeding and spawning. They are bottom-dwellers that use their sensitive barbels to forage in low-visibility waters, and they can be active year-round but migrate seasonally. These fish show minimal territorial behavior, focusing instead on energy conservation during long migrations.
Conservation Status
Listed as Critically Endangered by IUCN.