Kaiyodo Furuta Choco Egg Miniature Ayu Fish, about 1 1/2" long. Plastic puzzle inside it's own capsule. Snap together - no glue needed. Sold in Japan inside chocolate eggs, but, not available that way in the US. The information sheet is all in Japanese, but, has a diagram showing how it goes together. Not for small children - small parts/choking hazard.