We feed our target puffer a goldfish midweek to hold him over between crabs but this week the goldfish was too big for him to eat and he left it alone. After about three days I pulled the goldfish out and threw him in the 50 gallon community tank. He's in with some balas and clown loaches and a few black skirt tetras. I'm thinking about just leaving him in there. He's a good four inches. He seems to be doing okay in the 75ish degree water. What do you guys think? I don't want to flush him, and I don't want to kill him unless the puffer eats him. Do I have a new resident for the 50 gallon tank?