It depends on which fish it
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.
They eat vegatation in the water and some fish eat other fish. Many Freshwater fish also eat insects and freshwater crustaceans.
No, they are actually a breed of freshwater fish. Reptiles are known for their scales. Fish are known for fins and breathing underwater. Angelfish are fish!
fresh water species tend to breed more, but there are more different saltwater species than freshwater, so it depends on what question youre asking
I'm not sure what you mean by a freshwater salmon exactly, but the fish commonly called a sea trout is a type of perch and completely unrelated to salmon.
Loaches are freshwater fish, for example, the clown loach which is a freshwater fish.
well im not entirely sure but i don't belive any freshwater fish are easy to breed. I would not recomend breeding fish unless you do the proper research. you have to know what your doing. if you already did your research the find a breed that you like and breed um up.
Channel catfish and talapia both are bred quite well commercially.
They are freshwater fish.
buy a new fish
Bass, trout, salmon, bluegill, other freshwater fish...
Redfish are fresh water