Fish are an important motif in Chinese mythology. There are various myths involving fish. Chinese mythology refers to those myths found in the historical geographic area of China. The geographic area of "China" is of course a concept which has evolved of changed through history. Fish in Chinese mythology include myths in Chinese and other languages, as transmitted by Han Chinese as well as other officially recognized 56 minority ethnic groups in China. The Chinese word for "fish", yu, is a homophone for "abundance", "plenty", and "affluence" (yu 餘); therefore, fishes are a symbol of wealth. The Chinese dragon is the head of the fish clan. The act of fishing is also an important motif in Chinese mythology and culture.