So I brought home a baby lionfish from my LFS today, acclimated for over two hours. I let him loose in the tank, and he floated to the bottom. It dosen't look like he is breathing, and my water levels are good. He was alright in the store, I watched him eat. So what the crap, is he in shock or scared, or is my damn $40 fish I've waited patiently for two months dead. I'm so upset.