Thanks Alicia! The female continues to do well. I left for the weekend and came back on Sun. Oh boy, did I have a scare! I couldn't find her anywhere. I thought she was dead. A few minutes later, I fed the tank, hoping she would come out. It took her about 1 minute to come out of her cave. She started to feed immediately. Whew, what a relief! I have my replacements coming tomorrow. I just hope they do better than the first couple. If they are doa, I will not order anymore. It is just heartbreaking watching these beautiful fish die.