oh i have more fish. 5 pj cardinals{ 2 spawn regularly }, coral beauty, eibl's angel,flame angel 2 dragonettes, 2 blennies, goby with his shrimp, 9 zebra dart fish,3 yellow tail damsel{ don't bother anything}, pair clarki's and anemone{spawn reg}, solar wrasse, orange back wrasse, coral, clam,shrimps, crabs,etc. I have had all my tangs for at least 2 yrs. Largest is the bristletooth at about 6" tip to tip. All the others are 5" or less. Actually all my fish exept for the flame has been in there for at least a yr. The problem is- my daughter lives 800 miles away and brought the fish with her. If i cant fit this tang into my system, he's going to stay in a 20 gal qt for 5 or 6 months until I can get him to a pet store that handles salt. Closest one to me is 6 hr drive. My daughter thought she was getting me a great gift. Wasn't aware of the dynamics of a reef tank.