It is saltwater.
saltwater
salt
the Atlantic Ocean, the Pacific Ocean, the Indian ocean, and the artic ocean
Because saltwater fish can only breathe in saltwater (as in the ocean) and freshwater fish can only breathe in freshwater (as in tap water.)
They contain elements of both freshwater and saltwater ecosystems.
San Francisco Bay is surrounded by the Pacific Ocean. The bay itself is an estuary, where freshwater from rivers meets the saltwater of the Pacific. This proximity to the ocean influences the bay's tides, currents, and overall ecosystem.
Salmon are anadromous fish, meaning they are born in freshwater, migrate to the ocean, and then return to freshwater to spawn. They can thrive in both saltwater and freshwater environments.
Salmon live in both freshwater and saltwater environments. They are born in freshwater, migrate to the ocean to grow and mature, and then return to freshwater to spawn.
The ocean is not aquatic, it is marine. Aquatic is freshwater. Marine is saltwater.
Salmon are anadromous fish, meaning they are born in freshwater, migrate to the ocean to grow, and then return to freshwater to spawn. They can thrive in both freshwater and saltwater environments.
Clownfish are saltwater fish that live in coral reefs and are found in warm waters of the Indian and Pacific Oceans. They have a symbiotic relationship with sea anemones, where they are immune to their venomous stings. Clownfish cannot survive in freshwater environments.
No, freshwater fish must be kept in freshwater and saltwater fish must be kept in saltwater. The one exception (that I know of) in nature is salmon which migrate from where they were born (freshwater) to the ocean and then back to where they were born again to breed.