This is a quick & easy blog to read & answers all the questions you may have when buying koi from Windsor fish Hatchery 

Most Frequently Asked Questions & Answers 

How big do koi fish get? 

Koi fish can grow surprisingly large: 

• Average home pond koi: 45–75 cm (18–30 inches)
• Large, well-kept koi: 75–90 cm (30–36 inches)
• Record-size koi: over 1 metre (around 40+ inches) 

 What size pond do koi need? 

This is one of the most important parts of keeping koi healthy. 

Minimum recommendation: 

• At least 1,000–2,000 litres per koi (very basic guideline) 

Better long-term setup: 

• 10,000+ litres  for a group of koi 

Depth matters too: 

• Minimum 1–1.2 metres deep
• Deeper (1.5–2m) is better for temperature stability and protection 

 How much do koi fish cost? 

Koi prices vary massively depending on quality, size, and breed. 

Common price ranges: 

• Pet store koi (small): $10–$50 each
• Better quality koi: $50–$300 
• High-grade koi  $500–$5,000+ 
• Elite Japanese koi: $10,000–$100,000

What affects price: 

• Color patterns and symmetry
• Breed variety (e.g. Kohaku, Sanke, Showa)
• Size and age
• Breeder reputation 
• Body shape and health 

You should also expect to receive the exact fish shown in the photos, ensuring confidence in your purchase.

  To learn more about shipping live fish, visit this page. If you want to know how to properly acclimatize your new fish, read the blog.  If you're looking for high-quality food for your koi, we have it here. before your fish arrive match your pH to ours 7.8     Read the blog do i need to quarantine my new fish get the answers