They are about 2 in a half inch rbp, still have spots, usually when i feed them brine shrimp, bloodworms, beefheart they really go crazy and enjoy it but lately, past 2 days they havent been as crazy about eating as they usually are, they arent acting sick or lethargic. I keep my water at about 80 degrees. put a medium sized minnow in to see if live food would peak their interest. They attacked it until its tail was gone then left it alone. What should i do? Also I did a 30% 40% wc about 5 days ago, so its about time to do another.