I was wondering about something ..... I have decided to go too mainly bettas.... I want to do a nice type .... I hear of butterflies and everything ..... I was leaning toward CTs .... But then I found the wonderful world of deltas and hms !! lol What exactley makes these there own type (deltas and hms) is it genes ??? fins ??? what ??? Also I know of plakats cts and veiltails mostley .... If you know any other breeds pst them if you like