In old Japan, myth has it that earthquakes are caused by a giant catfish (namazu). After the Great Ansei Earthquake of 1855 which hit Edo (now
Japan Tokyo), a new type of color woodblock print blaming the fish became popular. Pink Tentacle explains:
These prints featured depictions of mythical giant catfish (namazu) who, according to popular legend, caused earthquakes by thrashing about in their underground lairs. In addition to providing humor and social commentary, many prints claimed to offer protection from future earthquakes.