Byer Koi Farm - Koi Carp For Sale Online - Or Visit Our Shop In Herts

Welcome to Byer Koi Farm the leading UK Koi Farm breeding award winning high quality koi carp the Japanese way from Japanese Koi. Fully quarantined imported Japanese Koi Carp for sale too. Wide range available all year round - buy online or visit our well stocked koi shop near Hemel Hempstead in SE England (Herts)

No appointments needed to visit during our opening hours - Byer Koi Farm - Opening Hours. Immerse yourself in our wide range of koi, koi food, and other dry goods essentials. Pick your own koi mixes in our small koi range! Or choose from individual premium koi, including imported Japanese Koi.

Premium Quality
Individual Koi

In a wide range of varieties, sizes and prices
Individual Koi For Sale

Selected
small koi mixes

Wide range of varieties and sizes
Small Koi Mixes For Sale

High Quality Koi
Available

Throughout the year
koi for sale

USE THE SAME koi FOOD

As the UK's breeder of champions
buy koi food

koi fry
available

During the summer
join fry waiting list

Individual Koi available from £30 to £1000+

View all
Quick view
50-55cm Nisai (Marujyu) REF - FE19
Byer Koi Farm
from £795.00
Quick view
50-55cm Nisai (Marujyu) REF - FE18
Byer Koi Farm
from £795.00
Quick view
45-50cm Nisai (Marujyu) REF - FE17
Byer Koi Farm
£795.00
Quick view
50cm Showa (Yagengi) REF - MA18
Byer Koi Farm
£695.00
Quick view
48cm Ginrin Showa (Yagengi) REF - MA19
Byer Koi Farm
£595.00
View all
196 products

A family business

everyone contributes

A focus on quality

very special Japanese koi brood stock and optimised breeding lines

Focusing on quality
award winning koi
8 recent koi champions, and 100's of koi awards
awards list

variety specialists

Kohaku, Oakly Chagoi, Showa

jumbo single colour koi

Mukashi Ogon, Chagoi, Karashigoi, Yamabuki

jumbo koi genetics

jumbo tosai

From our koi blog

View all
July Fry Update – Round 2 Karashigoi/Chagoi Now Available + Spawning News
July Fry Update – Round 2 Karashigoi/Chagoi Now Available + Spawning News
Highlights from the 2025 BKKS National Koi Show
Highlights from the 2025 BKKS National Koi Show
A Week In The Life Of A Koi Farmer (wc 23_6_2025)
A Week In The Life Of A Koi Farmer (wc 23_6_2025)

Our Koi Shop

Open to the public!

Visit during Opening Hours (no appointment necessary)

Explore our wide range of koi and dry goods, and get expert advice from koi professionals.

What3Words: boat.jukebox.reply

We've placed a pin on Google Maps at exactly the right location - click the button below for directions:

Get directions