yea you have to acclimate slowly, he might just be stressed and getting used to it. he'd do best in a 40breeder if you can get one due to the fact it has a bigger bottom. i fed mine live ghost shrimp, freezedried krill, and bloodworms. i had to feed the ghost shrimp and the krill with tweezers and i had to reverse the suction on the gravel vac for him to eat, he was very picky but theyre cool, hope he pulls through