Best in Size 4 – ZNA Potomac Koi Show Koi Show Winners, ZNA Potomac Koi Show Best in Size 4 ZNA Potomac Koi Show – 2018 Variety: Showa Owner: Thai B Search Our Koi Champions by Tag 2018, Best in Size, Showa, ZNA Potomac Koi Show Posted on September 16, 2018 ← Best in Size 5 – ZNA Potomac Koi Show Best in Size 1 – ZNA Potomac Koi Show →