While other fish eggs can be used for food, they are not considered caviar.
Here's why:
* Taste and Texture: Sturgeon roe has a unique, buttery texture and a delicate, salty flavor that is distinct from other fish roe.
* Historical Significance: Caviar has been a delicacy for centuries, specifically associated with sturgeon.
* Conservation Efforts: Many sturgeon species are endangered, leading to strict regulations and conservation efforts surrounding caviar production.
So, if you see a product labeled as caviar, it should come from a sturgeon species.