Hi I recently got two male cresties (don't worry, I'll have pictures up later this week) I was just curious what size tank I'd have to keep them in to make sure they don't fight. I got these from a lady my wife works with and she had two in a 40 breeder. I wanted to downsize if I could but I don't want to cramp the little guys. Should I move both males to 10 gallon tanks, or could two go into a 20 Long? How about a 35 gallon? Thanks