I've had one since memorial day that's still small 3". It only picked on my damsels when I put them in the tank a month after I got her, otherwise easy to care for, eats a ton. I feed my fish several different things, but I think my lemonpeel like brine the best, so I usually drop it in the tank last. Loves to swim in the rock work, and will still hide when I walk up to the tank, but will come out after about 10 seconds.