I probably had him two weeks or so and yeah he was very active when I was present and when I put food in the tank he seem to come out and get some..and the tiger pistol he was paired with would come out too and grab some pellets ad they would both scurry back into their hole. I did think about the eating but what worries me is I out a lawnmower Blenny in my tank on Friday and I haven't seen him since so I don't know what's up with my tank. Meanwhile, my mandarin continues to just coast around my tank pecking off pods and living happily and he was the first fish I put in there and I've had him for almost two months like it doesn't make sense to me