How Fast Do Fantail Goldfish Grow: Tips for Faster Growth

The fantail goldfish is a tropical fish found in the aquarium trade. It is a popular fish for the beginner because of its peaceful nature and easy to care for nature. The fantail goldfish is a slender fish that has an elongated tail.

They can reach up to eight inches in length and have a golden coloration with blue and black markings. They are a popular choice among fish enthusiasts because of their fancy tails but are also easy to care for. Fantail goldfish grow about 1 inch per year. Additionally, they may grow larger as they get older.

How to Help Fantail Goldfish Grow Fast

One way to make goldfish grow fast is by raising them in an enriched water environment. This will help the fish to reach their full potential size more quickly. Additionally, feeding them a diet rich in fresh vegetables and meat will help speed up their growth.


Providing the proper nutrition to help them grow quickly and healthily is essential. Their diet consists mainly of small aquatic invertebrates and plant matter, making it easy to replicate their natural food source in your tank. However, ensure you do not overfeed them as this will cause obesity and health problems. Keep feeding your goldfish regularly, so they stay healthy and happy.

Tank Size

They need a lot of space to swim around – a 10 to 20-gallon tank is the smallest size they should be kept in. Fantail goldfish grow quickly and need lots of stimulation, providing them with plenty of rocks, plants, and toys. Goldfish are intelligent fish and require good water quality – ensure the water is clean enough to see any flakes or bits floating on top.


Goldfish are tropical fish, and as a result, they do not do well in cold environments. It is essential to ensure that your goldfish has a warm environment (65-72 degrees Fahrenheit) to prevent them from getting sick. You can also help them by cleaning their aquarium regularly and providing enough water with proper temperature fluctuations. For extra warmth, you can use an aquarium heater.


Genetics plays a significant role in the growth of goldfish. Some fish are naturally faster growers than others and, as a result, can get up to three inches long within a year. Fantail goldfish is one of the giant goldfish around, so if you want yours to reach its full potential, it’s best to put it into a fast-growth tank immediately. In addition, make sure to provide them with plenty of food and oxygen and keep an eye on their water quality.

Water Quality

It is vital to keep water quality in check if you want your fish to stay healthy and happy. Here are some tips that will help:

  • Feed your fish a balanced diet that includes fresh vegetables and fruits and pellets or flakes.
  • Regular water changes are also significant – every two weeks is recommended.
  • Ensure your water is of good quality, has a pH balance of 7.0 – 8.2, and isn’t too hard or soft (ideally at around 6 degrees).

Fantail Goldfish Growth Rate

Goldfish grow quickly and can reach up to three inches in size within a year. If you want your goldfish to have the best chance of growing large, put it into a fast-growth tank as soon as possible. In addition, make sure to provide a balanced diet, clean the aquarium regularly, and keep water quality in check.

How Big Can Fantail Goldfish Get in the Wild vs. in a Tank?

When it comes to goldfish size, you can usually expect them to grow to around 6 inches in the wild. However, some goldfish can get up to 8 inches long in the wild – which is pretty big! So, if you’re thinking of keeping a goldfish as a pet, feed them plenty of appropriate foods and provide plenty of water and hiding spaces.

In a tank, goldfish typically reach around 4 inches long – but they can get quite big. That being said, goldfish are predatory fish and will hunt smaller fish for food – so if you want one that is small enough to be kept as a pet, choose a goldfish species that don’t eat other fishes.

Why Growing Fantail Goldfish Is Worth It

There are many benefits to keeping a fantail goldfish as a pet. These fish are usually quite active and love to play – making them great candidates for people who want an easy-to-care-for fish. They are therefore an excellent option for beginner fish keepers who want something easy to take care of. Fantail goldfish come in wide colorful varieties and are known for their playful personalities.

They make good tank companions for other small water creatures and often display comical behavior such as tail wagging or side-to-side swimming patterns. They’re also relatively low maintenance, requiring little in the way of extra food or water care. In addition, fantail goldfish make great conversation starters because they have unique markings!

When Should You Feed Your Fantail Goldfish?

When it comes to goldfish feeding, you don’t need to be concerned with precise timing. Instead, provide a healthy diet and enough water for your fish daily. In addition, be sure to provide your fish with plenty of hiding spaces – as these fish are known for being adventurous and playful.

Caring for Fantail Goldfish to Encourage Growth

Fantail goldfish require very little care in comparison to other types of fish. Provide a healthy diet and enough water daily, and be sure to provide them with plenty of hiding spaces. In addition, they are sometimes prone to getting along with other fish and should be kept in a tank with at least one other species if possible.

Breeding Fantail Goldfish

They’re easy to keep and breed quickly, making them an excellent choice for beginner fish keepers. Fantail goldfish are particularly popular, as they grow quickly and are relatively easy to care for. Choosing the right breeding pair is essential, as goldfish reach sexual maturity at 6-8 months. Once you’ve sorted your pair, it’s time to get to work. 

While they’re breeding, you’ll need to provide plenty of food, water, and a suitable tank. You’ll also need to monitor water quality and temperature and ensure the tank is well-lit. Breeding fantail goldfish is a great way to introduce new fish into your aquarium, making great interactive pets.