New reefer here. I love the life of a reef tank so I finally started one of my own a few months ago. It is a 20 gallon tank and only has 2 clown fish and would love to add a Midas Blenny. Those would be my only fish in this tank. I have some hermit crabs and plan on just adding corals. Would the Midas Blenny work or should I just wait until I can upgrade my tank size? What other Blennies would work if the Midas is a no go?