I'm guessing that they need more time to get used to the new tank. There's 4 of them. They occasionally nip at each other but stay huddled together. They have no interest in the caves yet. They have been eating sinking omega one pellets as long as I can manage to drop them right by them. What else should I try to feed them? Anything else I should do? They do seem to have more color then they did yesterday when I brought them home.