ok i have a perc clown, she is still small but not a baby. maybe two inches long and she has a smaller tank mate which im pretty sure there paired up. Now the problem is she is staying in the front corner and swimming like she does when the lights are out. I drop food in the tank and she doesnt even move. My paramaters are dead on.. PH 8.2 . nitrate maybe around 0.5 or less. all other inhabitants eat and are doing great. only other fish are my fire fish, one chromis(small) lwm bleeny, and her mate. any ideas? they normally go throug bouts of not eating or being stubborn?