This Friday I am about to pick up a cleaner shrimp and 3 Pajama Cardinals. I currently have 2 clown fish (nemos) and 2 yellow tail damsels in a 125 gal. My main concern is will the cleaner shrimp be okay with the 2 yellow tail damsels. Also i have owned the 2 clowns and 2 yellow tail damsels for over a year now. They were transferred from a smaller tank i had into the 125 gal. Also anyone know whats the limit of cleaner shrimps i can have in a 125 gal?