Decorations mainly used for celebrations and weddings. Pickled fish are mainly used as decorations at celebrations and weddings. It's really practical. After adding water and electricity, bubbles keep floating, fish swim up and down, and the color light keeps changing. In modern weddings, this quotation has become very popular. Bubble fish is puffer fish, the scientific name is "river crab", and there are other nicknames such as bubble fish, puffer fish, puffer fish and puffer fish.