hey folks im new to this forum, but i love my red. i have a question for anybody that can help. my red devil has not been his/her self lately. it runs when i come to the tank and it is just kind of floating around. not real active. I have had him for about 5 yrs and it is in a 55 gallon tank. i just did two water changes, brought a new heater and new filters. i feed him cichlid gold floating pellets medium. i dont know to much about fish so i am kind of lost at this point. if anyone could give me some advice it would be helpful. oh yeah i got the fish from petsmart and it is a foot long algae eater in the tank with it. the RD is about 7" long nice size. again thanks for any help.