Looking for Coral safe colourful Wrasse

[arash53]

Thank you , I checked Home Depot last weekend but I couldn't find anything I asked someone but I guess I asked wrong person, I have to ask for Window Screening stuff.

I thought the Yellow Coris are change sex like clown fish they all born as female and the dominant one change sex to male. if this is right if I couldn't find a male I could just pickup a bigger or smaller female , right?