Interesting, how many wrasses you think would be good with the melanurus and yellow coris in a 75g?These are all great ideas and possible additions. However I would pass on the Orange Back as it will be a bully towards smaller wrasse like the McCosker or rubeus. You could still add the Orangeback it’s just you would be a little restricted on what wrasse you add that aren’t Halichoeres or Leopards.