They were fine when I put them in the tank but then a few hours later the biggest male died. The others seem to be fine but they hide in the corner huddled together and are a little hesitant to eat but they are eating. I think they are just really stressed about the new environment. I have noticed today they were swimming around but once they saw me they all dived to the corner again, so I think they will normal in a few days, I hope. Were they really active in your tank?