They are tropical Freshwater Fish. They can be kept in an indoor heated tropical aquarium.
Salt water
Freshwater
saltwater fish need to breath in saltwater and not fresh water. just like we need to breath in oxygen and not carbon dioxide.
Fesh
algae and plants
fresh water fish
Saltwater fish don't live in freshwater.
There is nothing extra special about saltwater fish that helps them with their environment. Some fish actually can live in fresh or saltwater.
they drown
Some Can And Some Can't.
Saltwater
Yes they do.