interesting is one take, I got them before joining this forumn and therefor was not in the know on these things. They were sold by my trusted Lfs as community fish by one if their younger employees. After talking with the owner, more so voicing my dis pleasure with the attacks on my tank, he said basically there are lots of variations of this species with greatly varying attitudes/temperment. Mine just happened to be the mike Tyson variety.. Ohh well I love them in their own tank. They are extremely social with each other and they're always doing the wiggle wobble dance