So almost a week ago I pick these guys up at Petco
I employee there stated they had them there for about 3 weeks and that they were eating great. Both looked fat and happy when I got them. Since then the smaller of the two pretty much stays on the side of my DT kind of hidden by thge rocks. He is basically treading water and he flips back and forth. I have not seen him eat anything. Even when it floats right by his face, nothing. I have tried pellets, rods, reef bar, frozen mysis, and frozen and live brine. Just wont touch it. The bigger of the two is all over the tank and seems to eat everything. That fish always seems to go back to the smaller and they do hang out together in that spot. Should I be concerned at all here? This is the first fish I've gotten that does not move or eat, and im not sure what to do. Thanks in advance for any assist.
John

I employee there stated they had them there for about 3 weeks and that they were eating great. Both looked fat and happy when I got them. Since then the smaller of the two pretty much stays on the side of my DT kind of hidden by thge rocks. He is basically treading water and he flips back and forth. I have not seen him eat anything. Even when it floats right by his face, nothing. I have tried pellets, rods, reef bar, frozen mysis, and frozen and live brine. Just wont touch it. The bigger of the two is all over the tank and seems to eat everything. That fish always seems to go back to the smaller and they do hang out together in that spot. Should I be concerned at all here? This is the first fish I've gotten that does not move or eat, and im not sure what to do. Thanks in advance for any assist.
John