I was wondering if anyone here had any experience with a single convict coexisting with a red tailed shark. I know it's a cichlid with a non cichlid, but i have read of people keeping red tails with cichlids. So here's the situation, I have two tanks myself(75 gallon Oscar, 55 gallon Dempsey), and it caused my fiancÃƒÂ© to catch aquarium fever. So she purchased a 40 gallon tank, and after weeks of her wanting to add fish it's finally cycled. She wants both a convict and a red tail, I'm willing to try the experiment as I do have an old 30 gallon I could pull out of the garage if I had to separate the two. Sorry for the long story, but comments and/or advice would be great. Thanks.