I didn't know that, ty for telling me. I only have the means for the 75g atm so I will stay away from the ceibals. I really love lyonsi I just think there a great looking fish but I don't want to put them in the tank if its not likely to work. Jeff Rapps was actually the one who told 4 med-large in a 75 wouldn't be a problem as long as temperament an size were accounted for. He doesn't have any lyonsi atm but florida tropical fish direct actually does. I know Jeff had actually gave a few options including Amititlania Siquia, chocolate cichlid, gold jack, flier cichlid, Spectabilis, and heroina iso from the current stock. That's why I thought it might not be a prob to add a few to the tank. Might just wait and think it over