What does the unknown chemical do in fish tycoon?

Answer 1

It will change some of the body parts on some of your fish. It can give you magical fish, but make sure that you move all of your higher priced fish to a different tank first. Otherwise, you may lose your valuable fish as they could be changed.

Answer 2

It changes the body part of the fish in the tank. it would be best to not have a magical fish in the tank when doing this. also, it does give a chance of making a magical fish.