

You can, of course, use the rules above to work out the goldfish tank size you will need for any number of goldfish. If you have a 30 gallon tank and are thinking about which goldfish to buy, this might help you make your choice! What if I have more than two goldfish? You might have noticed that 30 gallons is the recommended figure for a single Common goldfish or for two fancy goldfish. That’s 20 gallons for the first fish and 10 additional gallons for the second fish. 42 gallons for two Common goldfish. That’s 30 gallons for the first fish and 12 additional gallons for the second fish.What if I have two goldfish?īased on the rules above, the goldfish tank size we recommend for two goldfish is: If you plan to keep more than one goldfish in your tank then add an extra 10 gallons for each additional fish. Fancy goldfish tank sizeįor fancy goldfish, we recommend a tank measuring at least 3 feet long with a volume of at least 20 gallons. While it is certainly possible to keep Common and Comet goldfish in a tank, they can grow so large – and are so fast swimming – that they are really better suited to living in a pond. If you plan to keep more than one goldfish in your tank then add an extra 12 gallons for each additional fish. Of course, it’s a case of the bigger the better! So any more than this is great too. Common and Comet goldfish tank sizeįor Common goldfish, Comets and Shubunkins, we recommend a tank measuring at least 4 feet long with a volume of at least 30 gallons. The goldfish tank size you choose will depend on whether you have a fast-swimming, slim-bodied fish, like a Common, Comet or Shubunkin goldfish, or a slower-swimming fancy goldfish. That’s why you need to give your goldfish a nice big tank or pond. Your fish would suffer and it wouldn’t live very long at all. Imagine trying to fit an 8-10″ fish into a goldfish bowl! It just wouldn’t work. And you might be surprised to learn just how big goldfish get…Ĭommon goldfish can easily reach 10 inches and fancy goldfish regularly reach 8 inches in length.
5 gallon goldfish aquarium full#
They haven’t yet reached anything close to their full adult size. It’s important to realize that the goldfish you buy from a pet store are very young. This is because you don’t just have to give your goldfish enough room for today. You see, as well as thinking about the current size of your fish, you need to think about the potential size of your fish too. The reason that goldfish tank size matters so much is that goldfish need a big tank. Goldfish tank size is really important! In fact, the goldfish tank size you choose when you first buy your fish is one of the most important decisions you’ll make while caring for your fish.
