Eventually they'll need an aquarium with at least 30-gallons of water, and an aquarium at least 18-inches tall is recommended for Angels. Click here to see my 30-gallon aquarium that measures 24" high, and would be just right for this group of fish. For example, the water intake capacity of some tanks is 6 gallons while some gallons support 50 gallons of water. Keeping a fish that need 30 gallons of water in a tank that can hold 6 gallons of water is not appropriate. It is an alarming situation for the fish owner as it will affect the health of fish.
Sep 14, 2017 · Common Fish Tank Dimensions. While we can’t obviously cover every possible aquarium, this is a fair comprehensive list of typical tank sizes. These dimensions should be able to be a very helpful guide for designing your next setup or making changes to your existing one.