Above: A gorgeous group of Assorted Koi, swimming around our tank.
These koi make for great pond mates. They usually vary in amazing colors and patterns.
Comments: This is a Premium Pet Fish, and we never see Premium Koi like these in any of the live fish stores that we visit.
Premium Pet Fish are more energetic, hardier, and have brighter colors with a beautiful metallic sheen.
Click here to learn more about Premium Pet Fish.
Origin: Koi are one of the most colorful and most popular aquarium fish.
Their ancestors originally lived in East Asia, but Koi are now found living in aquariums throughout most of the world.
There are many color varieties for sale in this store.
Maximum Size: In aquariums Koi can grow to be about 8"-12" long, including their tails.
Sometimes very old Koi are even bigger. Sometimes much bigger.
Behaviors: Most Koi are active swimmers but are rarely too aggressive.
Compatibility: Some recommended tank mates include other varieties of Koi.
Click here to read more about compatible groups of pet fish.
Temperature: Koi can live pretty well from about 60 to 75 degrees F., but they're probably most comfortable from about 68 to 72 degrees F.
Click here to learn about aquarium temperature, aquarium thermometers, and aquarium heaters.
Feeding: Premium Fish Food Flakes when small and Premium Pellet Food when larger.
Click here to learn more about and shop online for premium fish foods.
Water Conditions: Koi seem to be tolerant of a wide range of water conditions.
Probably a pH of about 7 with moderate hardness is best.
Most water in the US is different but seems to be OK, so it's probably best NOT to adjust the pH or the hardness of the water.
Here in our facilities the water is hard and the pH is usually about 7.8.
We ship them in this water.
Click here for a lot more information about aquarium water conditions.
Aquarium Size: It is probably best to house these fish in at least a 30-gallon tank, but bigger is better.
Keep at most one Koi per 3-gallon, when they're small. Larger koi need up to 10-gallons per Koi.
Huge Koi need even more water per fish and live best in a large pond with thousands of gallons of water.
Decor: Koi do not need gravel, unless they live in a pond and then they do need gravel.
A layer of gravel more than 1/4" thick will usually fill with bits of uneaten food that will contaminate the water.
Click here for more about aquarium gravel.
Live Plants are beautiful and improve the water quality and usually won't be eaten by Koi.
Aquarium Filter: Bio-Wheel Filters are highly recommended. A Penguin 200B Filter in an aquarium with 20 to 30-gallons of water is OK, but a Penguin 350B Filter is the right size for a 30 to 50-gallon aquarium.
Click here to learn more about aquarium filters.
The addition of Lava Rocks will keep nitrates in the ideal range.
Click here to learn more about using Lava Rocks in aquariums.
Life Span: Koi live for several years and perhaps even many years with good water and good food.
Gender: It's not easy to tell the males from the females even as they mature. Females become plumper when seen from above.
Click here for more about determining Koi gender.
Breeding: Koi scatter a large number of eggs on plants or on special breeding mops made of nylon yarn.
Click here for more about breeding Goldfish, which breed pretty much the same way Koi breed.
Popularity: For a long-long time Koi have been one of the most popular aquarium/pond fish.
Names: All of the many varieties of aquarium Koi are the same species, Cyprinus carpio.
Very ingenious fish farmers have been creating unusual Koi varieties for many years.
Variations: There are many-many color and shape varieties, which will interbreed to produce even more color varieties.
Click here for a lot more information about keeping and caring for Koi, including a picture gallery.
We hope you've enjoyed reading these comments.
All of our fish are Premium Quality Fish from the best suppliers in the world. Our fish have better health, more energy and brighter colors, as you can see in our pictures on this website.
We have 380-aquariums with lots-and-lots of popular aquarium fish plus lots-and-lots of rare fish!
We consider ourselves to be the link between the world's best sources of fish and the world's best customers. We love our work, and we are very responsible about caring for our fish and then shipping them carefully.
We also offer lots and lots of information about keeping and caring for pet fish, all from the knowledge of the Bailey Brothers, who have a combined total of 100+ years of experience as breeders, wholesalers, and retailers of pet fish!
Our fish and our customers are treated with the best of care, and we work energetically everyday to make sure every customer enjoys their new fishy friends.
When you purchase pet fish from us, you know you're receiving premium quality fish and premium quality service.
"Received my fish last night and was so pleased! They all arrived alive and appeared to be healthy.
"Once in the tank, they became very active and are now thriving in their new home.
"Beautiful fish, I asked for color and aquariumfish delivered. Processing and shipping was extremely quick."
Nevin and DrTom, the Bailey Brothers
This website is owned and operated by the Bailey Brothers, DrTom and Nevin, who've been together in the fish business for more than 50-years.
The Product Manager has been with the company for more than 35-years.
So we feel very confident that this is the fishiest crew anywhere.