I know a lot of the fish in this hobby are species aggressive or aggressive to similar colors, or body shape. I have a Starry Blenny, I would like to add a Midas Blenny. My tank is a 180 mixed reef, that will be "heavily stocked" once everyone is together. Will they be aggressive to each other since they are both blennys or is there enough of a difference/space they will be okay? Thanks yall.