fish too big

I have a 26 inch Pacu pirannah that has to go. I've had him since he was the size of a half-dollar. Apparently the pacu grows to 3 feet long, (a fact I did not know when I bought him). I have him in a 150 gallon bowfront tank, but he will grow out of it eventually. He's beating up my other fish. Does anyone know of some sort of fish rescue program?

I have no idea! But that is so sad :( . Maybe you should start with the people you purchased him from and see if they have any ideas or if they could rehome him for you.