The reason for a goldfish’s need for a large set up is because goldfish grow to be anywhere between 6 inches and 2 feet long depending on the type of fish you own. Also, goldfish create a lot of bio-waste quickly, and the larger tanks help keep the water healthier by giving the fish adequate space to swim.

How big should a tank be for a goldfish?

A good rule of thumb is to choose a tank of at least 10 gallons for one goldfish and 20 gallons for two goldfish. If you plan on keeping moor or fantail goldfish, you will need an even larger tank.

Can a goldfish live in a 1 gallon tank?

They are very hardy and resilient, they don’t really require special water care, they do fine in normal room temperature water, and are easy to feed and look after as well. You won’t be able to put more than 1 goldfish in a tank, but a single goldfish will do well in a 1 gallon tank.

Do goldfish like long or tall tanks?


Quote from video: And they get large. You know so you you really don't want a tall narrow tank it's just not good all around not for goldfish. The tanks are beautiful I understand why you want them.

What size tank do I need for 2 goldfish?

If you have two common goldfish, a tank of 50-60 is the ideal size. Try to aim for a tank with more water surface area than depth, because goldfish prefer longer tanks. For two fancy goldfish, however, a 30-gallon tank can work.

Will goldfish stay small in a small tank?

Some goldfish are naturally small and will stay small, even if you have them in a 200-gallon pond, while others may continue to grow, even in a tank that’s on the small side. Either way, these fish will grow and develop properly, barring underlying health conditions.

Can goldfish live in a 3 gallon tank?

A tank this small is easier to overcrowd than you can imagine. Following the “1 inch of fish per gallon of water” rule of thumb, you can put three 1-inch fish in a 3-gallon tank.

What fish can I put in a 2 gallon tank?

The two most popular fish for a small tank are bettas and angelfish. Other options include neon tetras, guppies, zebra danios, cherry barbs, otocinclus catfish, oscar cichlids (but not with other types of bottom feeders), goldfish (if you can provide enough room for them to grow), and other types of small fish.

Can I put a goldfish in a 5 gallon tank?

Goldfish are beautiful creatures but a 5-gallon tank is too small. Goldfish are big waste producers and water quality can quickly reach a danger zone in a 5 gallon tank. If you want to keep goldfish, consider keeping them in a small patio pond or get yourself between a 20 gallon and 40 gallon tank.