mine were two this year, first i put a flower-horn in with my Oscars and the flower-horn beat the crap out of a few of them. too bad too because he was a nice looking fish. the second mistake was an expensive one, i purchased a fish off ebay that i was so excited to get it i was at the mailbox waiting on the mail man patiently. it was a rtcxtsn that i paid twenty bucks for and an additional fifteen to ship it overnight. got the fish so excited he looked a little smaller then expected, put him in with the other Oscars and cats and watched as one of the oscars sucked the whole fish in his mouth... gone thirty five dollar snack! i learned the hard way if it looks like it could be eaten it will be.