Koi Fish 1000 pc PuzzleKoi 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