I have a two year old female Jag by itself in a 120 gallon and I am getting sick of it destroying the tank . I have a pet store that will find it a new home so it will not be killed or anything. I am just thinking I would rather have more mellow fish and not a beast. It is also hard for me to clean the tank because she is constantly chasing me and trying to take a chunk out of my hand. So I am looking for a little advice should I keep it or let it go.Anyone?