• "Miyako Tanago": This masterpiece captures the moment a female with beautiful nuptial coloration shows interest in a "Matsu kasagai" (a type of freshwater mussel) for spawning from spring to early summer. The figure's size is approximately 4.5cm. • An appendix to the "Weekly Natural Treasures of Japan" published from June 2002. A finely crafted figure created by Mr. Shinobu Matsumura of "Kaiyodo."