Not that I feel terribly compelled to stop you specifically from doing it, but never eat aquarium fish. Toxins build up in their meat. Eating an aquarium-kept/raised fish will put you on the toilet for a good while. And who's going to buy that two-foot Pacu? If you don't want it or have room for it anymore, why would someone else?if ur fish is big enougf then u can eat it or sell it to another fish keeper