I have a 90 gallon tank with 9 goldfish in it. 5 are decent sized and 4 are small, but they all get along well. I'll try to get pics up. Tank is filtered by 2 Aquaclear 110s. I also do twice weekly water changes of 25%. There are 5 orandas, 1 black moor, 1 lionhead, 1 ryukin, and 1 pearlscale.