A number of exotic species of fish, crayfish and other animals and plants are released from aquariums into United States waters each year.
Hobbyists owning tropical or native fish sometimes release their unwanted pets into the wild.
This action seems noble. However, the release could cause harmful consequences on native fish, other animals and plants in those waters. Release of pet fish into the wild is not good for your pet. Pet fish and any other plants or animals from the aquarium will be stressed. They'll be susceptible to disease and parasites.