I've had mine for all of a whopping two days now but every time I go to check on their food/water/general well-being (twice a day), I try to talk to them. I don't know that it will do anything but I'm hoping they'll get used to me and my voice and gradually become more comfortable, not to mention when they breed and have babies. There's one female in particular that seems to be a little bolder than the others; not sure if it's my voice or just her natural curiosity but she'll come to check me out while the others run to the back of the tub. I have yet to give them names, if ever I do...raising them as feeder-breeders and not pets but we'll see how long that lasts, lol!