Isa Jumbo Tosai 2018

Isa Koi Farm is well known as one of the world's top gosanke (kohaku, sanke, showa) breeders. Mr. Hajime Isa, along with his son, Mitsunori have koi breeding down to a science.

Scroll down this page to see the Isa koi we have available as well as many past award winning koi from Isa Koi Farm.

Video Tips for Choosing Isa's Tosai

Isa Koi Farm Mitsunori Isa talks about how to select Tosai Koi!


The 46th All Japan Combined Nishikigoi ShoW 2014
Superior Champion

The 53 Niigata Nishikigoi Show 2013
Grand Champion. Norin Suisan Daijin Shou

The 34th All Japan Junior Koi Show
Mature Champion

The 47th All Japan Koi Show
Mature Male Grand Champion

The 50th Nogyosai Nishikigoi Show Overall First Prize over 80bu

The 36th Division Overall Prize 65bu

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