Emperor Keikō
The Amur carp ("Cyprinus rubrofuscus"), a member of the cyprinid family species complex native to East Asia. Amur carp were previously identified as a subspecies of the common carp (as "C. c. haematopterus"), but recent authorities treat it as a separate species under the name "C. rubrofuscus". Amur carp have been aquacultured as a food fish at least as long ago as the fifth century BC in China. Jin Dynasty (fourth century AD) texts mentioned carp of various colors. The oldest record on colored carp in Japan is found in the Japanese history book "Nihon Shoki" (Chronicles of Japan) completed in 720. According to the "Nihon shoki", it is recorded that Emperor Keikō praised colored carp in a pond in the Mino region in 94 and that Emperor Suiko saw them in the garden of Soga no Umako's residence in 620.