gender

I bought supposedly 2 males and 1 female Cardinalfish (attached images below), however im a little less convinced and would like a second opinion if thats at all possible. Male Male Female Any help would be appreciated :)

I have two leopard wrasses 4 inch and 3 inch roughly. They both have the speckled female color pattern and look roughly the same except for size. They are active, eat well, and get along great. Usually they are within a foot of each other at any given time so they seem to prefer to swim and hunt...