New Jersey Division of Fish and Wildlife |
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.