1 Happiness and wealth: In China culture, fish (carp or goldfish) is regarded as one of the auspicious symbols. Pronunciation is similar to "Yu" (Yu, Yu) and homophonic with "Yu" (richness and sufficiency), which is regarded as a symbol of wealth and abundance. Therefore, using fish as the background of WeChat may express the expectation of happiness and wealth.

Peace and tranquility: fish swim freely in the water, which means a peaceful and quiet life. The fish in the background of WeChat can remind people to keep inner peace and pursue tranquility.

3 water element: fish is a creature in the water, and the picture of fish in the background of WeChat may emphasize the existence of water element. Water in culture often symbolizes the source of flow, change, emotion and inspiration.