well i just lost a tang so i have some room to fill in my tank. I have a 75 gallon tank w/ a lemon butterflyfish, coral beauty angelfish, 2 clownfish, a sixline wrasse, a lawnmower blenny, a strawberry psuedochromis, and a royal gramma. 1 cleaner shrimp (1 just recently died) and various snails and crabs. Any suggestions? I also have live rock.