Everytime I get them in something major happens and I lose fish..... ones that actually matter to me.... I get a bit upset about losing any fish but these have all been ones that make me crazy to lose... The first set of big rtcs that I had come in a week later my pump seized up and I had a huge amonia spike come home to cloudy water two dead rtcs and a dead silver aro (26") then this time I get one in all my heating fails and I lose one rtc and all 6 motoros... I have decided that if I will never own and RTC again!!!!!! (well if I do it will be in a pond by itself cause I really love the look of this fish)......