I luv them. They stay out all day...free floating in place. The are brillant in color & very hardy. I am nursing one back who got caught in a powerhead stream & some LR & I upgrade her improvements almost daily. I say get 3 because of the odd number being more successful with possible tank mates/buddies (they don't breed well). They are schooling fish in the wild. The downside is one might get the 'smackdown' if the other 2 work out. Mine have no real aggression towards each other. The occ. 'get-out-of-my-space-in-the-water' type of 'tude with each other. 2 of them actually sleep from time to time like right on top of each other practally, more side by side, but I've never seen this 'bolt-hole' they make. I heard to be careful of scarlet hermits, cause they supposely can eat right through them if they're 'bolted' down for the night. Mine tend to sleep under rock or large space in the LR. You can only find them online though, unless you live near a coastline. I'm guessing because I haven't ever seen any here in Chicago & we're a big city. I got mine from here...great shippers. Again hearty & easy to care & feed for. Good luck
beautiful fish though just sad i couldnt save him