Keeping koi fish is an exciting hobby. Koi are colorful and active and make a fun conversation topic. Plus, they’re beautiful to look at.

However, caring for koi isn’t as simple as throwing them in your pond and watching them swim around. These fish require lots of attention, food, and space.

When you buy koi for the first time, it can be intimidating to know what you’re getting into. The cost of keeping a koi aquarium is high, so you must know how much these exotic fish will cost you before investing.

How much do koi fish cost?

Koi fish typically cost around $20-$50 for a healthy koi measuring around 5″ in length. However, prices can range from $5 to well over $10,000 for a single fish, depending on the koi’s size, age, color, and quality. A high-quality koi fish can cost as much as $17,000.

S Legend is a Kōhaku koi that sold for about $2 million. The nine-year-old fish was a “perfect” specimen of the breed, with brilliant orange splotches along the length of its white body.

Are koi fishes expensive

The cost of a koi fish over their lifetime

When deciding whether or not to purchase a koi fish, it is important to consider all the costs associated with owning one. In addition to the initial purchase price, you will also need to factor in the cost of food, supplies, and housing.

Koi require a large pond or tank and a special filtration system to maintain optimal water quality. The average 6-foot by 8-foot koi pond costs $11,000, ranging from $9,000 to $13,000.

Why are koi fish so expensive?

Koi fish prices range from as low as $8 to tens of thousands of dollars. They are so expensive because they have been selectively bred for generations to achieve their color and size. The most expensive and prized Koi fish can sell for over a million dollars!

Most people are interested in high-quality Koi fish. From a population of millions of Koi, only a small percentage forms the quality breeders desire. Breeding show quality koi takes knowledge and years of expertise, and only a handful of breeders have that.

Therefore, the supply of good Koi is not abundant, which drives the price. More sought-after varieties can cost well over $100, with the most expensive colors reaching prices in the thousands. In addition to adult Koi fish, babies or fry can cost around $5 each.

A koi fish can be a very expensive investment, ranging from $15 for a small fish to thousands of dollars for a larger one. However, a koi fish costs nothing compared to its lifetime care.

Koi can live for up to 40 years in captivity, and the quality of their care only limits their lifespan. Properly cared for, a koi fish can easily outlive their owner. As such, it is important to consider the cost of their lifetime care when deciding to purchase a koi fish.

Buying the koi fish

Koi fish are not only beautiful, but they can also be quite costly. Depending on the koi’s size, age, and quality, they can cost anywhere from a few dollars to tens of thousands of dollars.

However, the price is not the only thing you must consider when purchasing a koi fish.

Over their lifetime, koi can cost quite a bit of money to care for. From the initial purchase price to the cost of food and supplies and any necessary medical care, owning a koi fish can be quite expensive.

The cost of the koi fish food

A good bulk Koi food will probably cost $40-60. You may spend this amount every month on food for several adult fish. If you only have one or a few fish, it will cost you less.

The cost of the pond

Ponds can be a beautiful addition to any home but can also be costly. The average pond costs between $500 and $2,145 per square foot, making them a significant investment.

However, ponds can be well worth the cost, as they provide a tranquil oasis for relaxation and enjoyment. Ponds also offer many health benefits, such as reducing stress and improving mental well-being. If you are considering adding a pond to your home, be sure to research all the potential costs to make an informed decision.

The cost of the koi fish filter

Pond filters, which cost $150 to $1,300, keep the water clean and clear by capturing leaves and other debris. They also convert harmful nitrites, from degraded fish food and waste, into harmless nitrates. 

If you are looking for a quality koi fish filter, you should consider the Bio Pressure Pond Filter with Built-in 13 W U-V Light Up to 1600 Gallons. This filter is specifically designed for koi ponds and can accommodate up to 1600 gallons of water. It features a convenient cleaning crank handle that makes it easy to keep your pond clean and clear. The cost of this filter is very reasonable, especially considering the quality of the product.

The cost of the koi pond pump

The average cost of a pond pump for small to medium koi ponds ranges from $50 to $500. 

The TRUPOW 4226GPH Pond Filter Pump is great for those looking to cut costs on their koi pond. This pump is energy efficient and will pay for itself in no time. It is also easy to install and comes with everything you need to start.

Alternatively, you can use a solar pond pump to reduce the electricity cost.

The cost of the koi pond heater

This is using the national average of $0.10 for every kilowatt-hour and assuming a 100% efficiency rate, which is often the case for electric heaters (i.e., 100% of electricity is used just for heating).

So if you have a larger pond, around 5,000 gallons, you can expect an additional cost of $360 to your monthly bill. This makes heaters your most expensive option, bringing us alternative ways to heat your pond.

There are alternative ways to heat your pond, such as solar, which is an efficient way to heat (100% efficiency), and it transfers the heat around the entire tank without raising the water in just one part of the pond higher than in another part of the pond.

The cost of the chemicals

The cost of koi chemicals, treatment, and illness can be quite expensive. If you are not careful, you could easily spend over $1,500 on just the maintenance of your koi pond. Some of the features you choose for your pond, as well as your location and property, can inspection, maintenance, and even the type of pathogen can all affect the cost. It is important to be aware of all these factors before making any decisions.