First, read our stickies on breeding - namely color genetics and form to determine color and type/form. There's also a basic color article here
But you may have to log in through tropicalfishkeep.com (mother site of Bettafish.com)
Your male is a double tail (DT) from a red cambodian x irid (turquoise, steel blue, or royal blue). Breeding him to another cambodian or irid should give you similar colors. Better yet, breed to colors like his. That will ensure his colors in fry.
Form wise, he is a DT and should be bred to a single tail - whether it's long or short.
If you want more specific replies, try getting a side view picture of him flaring so we could see his colors and form. Don't forget specific goals, stating colors/patterns and form/fin types you want.