Finished Puzzle Size: 19.25" x 26.5". 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. Art by Guido Borelli Strong high-quality puzzle pieces. Made from recycled board and printed with vegetable based ink. About Eurographics Puzzles Linen Paper, finished with an anti-glare coat for a perfect look. Thick and sturdy European Blue Board of the highest quality. (2mm) 100% Recyclable product, environmentally friendly and non-toxic. Smart Cut Technology A cutting edge process that creates a multitude of unique and unusual shapes which fit together perfectly. Just like snowflakes, no 2 pieces are alike. This will make for very different and unique puzzling.