Disposing of Unwanted Fish
Several alternatives exist for getting rid of an unwanted
fish. Individuals should consider returning it to a local pet shop for
resale or trade, or giving it to another hobbyist including an aquarium
in a professional office, museum, school, nursing home or to a public
aquarium or zoological park.
If these options are not available, a veterinarian or fishery
biologist can euthanize it with anesthetic. One can also do this at home
by placing the fish in a container of water and putting it into the
freezer. Because cold temperature is a natural anesthetic to tropical
fishes, this is considered a very humane method of euthanasia. A pet
shop also may be able to assist if euthanasia is the option chosen.