How long does it take Koi to mate? -Anthony

Koi generally start to breed when they are at least two years old and are 12 or more inches long. Some Koi are reach sexual maturity sooner, some later. They generally spawn from spring to early summer. You'll know that your Koi have spawned when you start to see fry swimming in the algae at the sides of your pond. Share: Del.icio.us Digg Reddit

Male or Female Koi

I have a bright yellow Koi in my pond (along with 3 other Koi). I suspect he is a male. How can I be sure? -Bethann Here's an article about Sexing Koi. Share: Del.icio.us Digg Reddit

How do you tell the sex of a Koi fish? -Angie

There's a great article about it here, Sexing Koi. Share: Del.icio.us Digg Reddit

As in other animals such as a cat, if it is tri colored, is it a female only or can males be tri colored in Koi? - Rick

A Koi's colors do not determine its sex. Both male and female Koi can have the same colors. Share: Del.icio.us Digg Reddit

Breeding Butterfly Koi

I got a pair of butterfly Kois with metallic gray color but they are relatively young (about 4months old) and I wanted to breed these guys. When is the right age for Kois to breed? -Gio Koi start breeding when they are at least 2 years old and when they are at least a foot long. I'd say that with two Koi, you have a 50/50 chance that both might be the same sex or that you have a male/female pair. If both of them are male or female, then you'll never be able to breed them. Share: Del.icio.us Digg Reddit

How do you tell a male from a female koi? -Dave

There are a bunch of subtle differences that male and female Koi have. They have different shaped fins and a different body conformation. Here's an in depth article on the subject: http://www.nishikigoi-info.com/koi-care/sexing-koi.html Share: Del.icio.us Digg Reddit