Post pics! I recently got a black fin from them too, but unsure of sex, i'd love to see yours if its colored up!
I will do my best to get a good picture this weekend. The Lethrinops seems to have taken up residence in the back side of the tank and comes to the front for feeding time. It is kinda bland at this point but when it hits the lights the right way it almost looks flourescent in the tale and dorsal fins.