Andorians seem to prefer Andorians. My friend and I both had Andorian captains in beta and we both had all-Andorian crews.
Four of each - since Andorians have 4 genders I wonder if they were all spouses.
But now I've got that mission reward bug so I don't have a full crew.
Actually, I love Andorians so much I researched them. My entire bridge crew is from different Thanns (I think it's thanns). First Officer zh'Rai is my favorite though - I actually wrote up her biography =)
This is a pic of the late USS Ataraxis crew. They were lost to Borg assimilation drones while defending against a surprise attack at a Federation Starbase. I was on special assignment involving the Klingon war at the time of the attack. I spent much time in the temples of Bajor. May the profits guide the souls of my former friends. ha ha