The girl’s online name is Dadaidaidaiyu. Girls like fish and they also like to be in a daze. According to the query of relevant public information, the online name is not the real name. Usually, the online name will be named after one's favorite animals, plants or places, and the name will be combined based on the mood and status at the time. The girl's online name is Dadaidaiyu. It can be seen that girls usually like to be in a daze, and they also like small goldfish, so they combined their names to be named Dadaidaiyu.