Thank you for all of the suggestions I will consider them all. My sister suggested Darth Vader (with Darth for short) as a name. Here are some pictures that I took tonight while I was cleaning his tank.
Thank you very much. I was so excited when I went to look for a new betta and saw that they had several half moons and double tails to choose from. Every time I had gone previously they had only had veil tails and crown tails.