No they can't because they need to have salt in the water. So no sea fish cannot swim in the river.
Sea fish don't live in rivers because rivers don't have coral or any sea plants. The sea plants are vital for some fish. That and some of the sea fish are to big for rivers.
Salmon swim in the sea. Salmon are fish. Fish love water. The sea is water. Thus, salmon swim in the sea. Voila!
Trout cannot swim at sea.
Sea Turtles swim in the sea because they eat fish.
Freshwater fish.
there is salt in the sea, not in rivers
yes they do
samon swim up river to lay their eggs then they die
Queer Fish That Swim in the Sea - 1898 was released on: USA: September 1898
Yes, a seahorse is a type of fish and it does swim.
There are certainly aquatic animals that can't swim, such as the clam, or the adult barnacle (and even then, the larval form of the barnacle does swim) but you wouldn't really call anything a fish if it couldn't swim. Fish swim.
yes they do