I like the silky texture of his fins. I go look at fish all the time with my friend, and we always argue over which ones are the coolest. She likes fin size and shape and I like color.
Be careful with that rock. It looks rough. I just had to remove the lava rock my anubias was attached to because I moved the gang to the 29 and my male betta into the hex. He was starting to gouge himself on it.