trout
I am not sure of the question but an Freshwater Angelfish is sold as a freshwater tropical fish.
A freshwater fish cannot be with a saltwater fish.It depends on the fish. Guppies are considered "freshwater" but will live happily in SW if properly acclimatized. Mollies are the same way.
they are both fish?
Freshwater and saltwater fish are in the same phylum that we are, and reptiles and amphibians and birds are in; phylum chordata, subphylum craniata, subphylum vertebrata.
The same for every fish that is a freshwater fish: 7.
The same as in the ocean
A freshwater fish is simply a fish that lives in salt-free water, such as a lake or a pond.
Basically yes; fully aquatic fish push water through their gills. This feature is the same in both freshwater and saltwater fish.
No. Glo fish are freshwater organisms and lobsters are saltwater organisms. And if they could live in the same water, one eats the other.
Salmon are anadromous fish, meaning they are born in freshwater, migrate to the ocean to mature, and then return to freshwater to spawn. They spend most of their life in the ocean but require freshwater for reproduction.
Yes. If you wish to get extremely picky they have fundamental differences but basically all fish are more or less the same.
No; clownfish are marine (saltwater) whereas fighting fish/betta's are freshwater fish. They cannot be placed into the same type of water or aquarium.