Boesemani are blue on the front half and yellow on the back half (you should google them). They look like Millennium Rainbows to me. I'm unclear on what you think the issue with them is. Is it coloration or behavior?
From what I can see in the photo, they both look like they are male to me. Rainbow fish are schooling fish and if you only have two, that could explain their behavior. As mentioned above, they may be sparring. Adding more (if you have the room) may lessen that behavior, since Rainbows are generally pretty peaceful.