they are about 8 or 9 inches, one is albino and one is red. i feed them cichlid gold and freeze dried jumbo krill. wat kind of balls do you mean? i used to have plants but they kept ripping them up so i got rid of them a while ago, and they used to like moving all the gravel into the corner but i took out all the gravel to keep the tank cleaner. i need something that can entertain them and that i dont have to keep on fixing everytime they move it around.