Ever since my Kole tang passed, there's been a gradual increase in green, leafy algae on the rocks so I'd like to get at least 2 blennies to start munching on it. I thought it would be nice to get a pair since I like the idea of having pairs of fish living in harmony. Now I'm not sure if Blennies pair up in aquariums, or if you can get a pair, mated or not. Even just non-fighting ones would be fine. Or I was also thinking of getting 2 different kinds and add them both at the same time so they hopefully wouldn't fight. My tank is 180 gal. with adequate rockwork. Has anyone had experience with blenny pairs, or at least 2 of the same kind getting along? The blennies I'm considering are Bi-color Black Sailfin Blenny Black Combtooth Blenny Midas Blenny Starry Blenny any other recommendations? I have a tailspot blenny already and he's super cool, otherwise I'd get that one.