I just caught a small green sunny. Its in quarentine in my 5.5 at the moment after i get my new 20 gallon long resealed the sunny is going in there. then after that it will go in a 4 ft tank. or my friends private pond. pics are coming soon. i had pics but the camera messed up and didnt save the pics.
Give it some time, a week, and it will be begging for food. Greens are very adaptable, If not the most adaptable sunfish.