I have my to little IT's. They are doing good and eating great but they just hang out most of the time. Are they not real active swimmers? They tend to hide a little, not to the point that I can't find them but I can't really enjoy them either. I don't think they're super shy because at night when it is about feeding time they are at the top level of the tank dancing at me. They look like they are wagging tails...if they had one, it is so cute. So is this just normal or should they be out and about more?