Currently have 9 tanks up and running, none of them large. Looking to upgrade to 2 LARGER tanks in the near future, to combine several tanks, and cut down on some of the cords running round here. The fish we have range from bettas to goldfish, and about 120 in total, 75% of them small types. We are anticipating building a couple of ponds once the ground thaws enough to rehome some of the goldfish as well. With a family of 5, and 9 tanks, we are kept busy. Right now, all the fish are happy and healthy in their homes. Will make a signature of tankmates, once we have the ponds built and larger tanks in place.