I was wondering about adding an angel to an established tank with silverdollars, clown plecos, redeyed swordtails, cory cat and turquois rainbows. Are these tank mates o.k. for angel fish? I've heard that angels should only be in spiecies specific tank, and then that they can co-habbitate with others in a community tank. What should I go with, I really like angels, but don't have space for yet an other tank. I just added a gold rfish tank to my living room and my wife would kill me if I bring home another. All these fish I listed in the other tank and are at full grown sizes or half way (silverdollars). If these fish are o.k. should I get an angel of 2-3in. or smaller or bigger? Yes this tank is being up graded from 38 gal to a home made self designed 75gal all glass tank. All the fish now are pretty relaxed with each other, would this work or don't disturb the mix? Also if it is o.k. would one alone be fine or should I get a pair? ???