IMO if you were choosing between the red devil and the texas I would go with the texas as you could actually put in say a raphael cat and a couple of dithers where as a mature devil would anihilate everything, or so I have heard. But if you want only one fish in a tank I think the red devil is a nicely colored fish, but once again I would say order a midas or citronellum or labiatus from rapps so you know you have a pure bred, if thats what you want.