Do sardine fish have to live in salt water?

Yes, sardines are saltwater fish and cannot survive in freshwater. They are part of the herring family and thrive in the salty environments of oceans and seas.

While some fish species can tolerate a range of salinity levels, sardines are specifically adapted to live in saltwater. Their bodies are designed to regulate the balance of salts and water in their systems, which is essential for survival in the ocean.