I just ordered for from River Wonders today all at three inches (moved cichlids to pond so my 240 is empty) I have heard that though in the wild they get 24 inches that (from a guy who has some) the biggest he has ever had has been one foot and as long the fish isn't small they are fairly peaceful. But, I have read that they are aggressive with fish that resemble them-a shame cause I wanted to add a school of A. Falcatus and Hujeta Gar-do you guys think I should give it a go! The guy I spoke to at River Wonders said it would work.