Actually, it is a Red Amazonicus tad . The tail looks deformed because it was all ready dead when I took this really bad picture. I think it died the day before, so it is starting to breakdown. I haven't seen it before either, so figured I would post it and see if I can find some answers.
I would guess bacterial infection (bloat). I am still trying to find a good treatment for this as it seems a common problem. I mean good husbandry is what is needed to prevent it, but it's easy to get lazy. How often were you doing water changes? Feeding?