Answer by
BrendaG (6111)
One fish per ten gallons of water is recommended. Assuming it is a 20 gallon tank, it could comfortably be home to clownfish, damsels, gobies, and surgeonfish. You may want to add a couple of "decorative" touches such as porcelain crabs, camel shrimp, or a starfish. Before adding any fish, let your tank run for a couple of days.