I've been eying up those dark blue reef chromis for a while now , they are really pretty fish my problem is every time I have tried to order them theirs only 1 or 2 in stock . after seeing what happen a long while back with the blue/green chromis adding 1 or 2 at a time is not a option for me , don't get me wrong they survived they just never schooled together . it was just one of those odd things I never even considered would happen .
seeing you only have a 35g tank I would be Leary of the blue chromis as they get to around 5 inch each , so basically you would be fully stocked with 3 chromis and that's a lot,
live aquara says there good in 30g but a lot of times your better looking at how big they get full grown , you cant always fall on there charts as sometimes they are off.