Looking to add a Hippo tang to my tank that is 5-6" and healthy from a club member. I currently have a 5" yellow in my 125 6' tank. Does anyone have any thoughts on the outcome? The yellow is the dominate fish. Others in the tank are a pair of clowns, 6 line, green chromis, red lip blennie, and a damsel. Catching the yellow, rearranging the rock, etc are not options I want to pursue. I would like to add the fish but not at the expense of his health.