Koi is an informal name for the colored variants of C. rubrofuscus kept for ornamental purposes. There are many varieties of ornamental koi, originating from breeding that began in Niigata, Japan in the early 19th century. 1000-Piece Puzzle. This colorful puzzle measures 26.6 x 19.25 in completed.

Eurographics puzzles are made according to high standards; 100% recyclable materials, non-toxic and vegetable based inks, 0.07" blueboard for exact piece fit without fraying, and certified by the Forest Stewardship Council.