IUCN threat status:

Critically Endangered (CR)

Brief Summary

Read full entry

Learn more about this article


Commonly found in coastal waters, the star sturgeon spends the day close to the seabed, where its downward-facing mouth helps it to feed on bottom-dwelling organisms, such as worms, molluscs and small fish (2) (4). At night, the star sturgeon becomes more active, rising up to the water surface to find other sources of prey (4). In order to reproduce, the star sturgeon must undergo a migration from the sea into a freshwater river, swimming upstream to the spawning ground. Interestingly, there are two separate “races” of star sturgeon, which display different spawning behaviours. One race migrates and spawns during spring and summer, while the other migrates in the winter, over-winters in the river and spawns in the following spring (2). A single female produces a vast amount of eggs, in the order of hundreds of thousands, which stick to river vegetation and stones (6). Generally, it is only the juvenile star sturgeons that are threatened by predation, as the large size and armour of the adults helps to deter predators (2) (6). Nevertheless, on occasion, the parasitic, eel-like lamprey has been known to cause fatal injuries to adult star sturgeons (6).


Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Wildscreen

Source: ARKive

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!