I currently have a 135 gallon 72 inch tank. Currently there are 2 oscars around 2 inches, 1 2 inch green terror and 1 tiny, maybe 1 inch severum. Would an ornate bichir be a good addition to this tank? Anyone ever try this mix? I saw some little 2 inch ornates and thought they looked pretty cool. Also, how big do the ornates get?