Adversity, Catfish Effect and Competition Effect Catfish Effect originated from a story of a fisherman catching fish. According to this story, Norwegians like to eat sardines. In order to ensure the freshness of sardines, fishermen consciously put some catfish in the process of transporting sardines to make them nervous, so as to enhance the vitality of the group and prevent sardines from dying. This interesting phenomenon is called "catfish effect". The catfish effect shows that ignoring the crisis will lose vitality. People, only by keeping a sense of crisis at all times, can stimulate vitality and innovate constantly. When you are prepared for danger in times of peace, you will relax your vigilance and slacken your fighting spirit. The catfish effect tells us that no matter when and where, we should always keep a clear head, have a sense of survival, work hard and forge ahead. Otherwise it will be eliminated by the times. The catfish effect tells us that society should create a mature talent flow environment. Without the flow of talents, the unit will be like a stagnant pool. Therefore, the introduction of talents can keep vitality forever. The catfish effect tells us that the crisis contains more opportunities.