our first tank about 8 years ago came with a green spotted puffer. (converted from brackish, got it and everything with it from my hubby's sister) we never had a problem with him. as a matter of fact he just died of old age the beginning of this year. (before we brought our current tank back from the dead)he was 3 or 4 years old when we got him he never ate any thing he wasn't supposed too, never agressive etc. he was cool and i miss him
robin