Excuse me, which prawn knows what pheromone is? What is this for?

Pheromone, a chemical substance that interacts between individuals of the same species, can affect each other's behavior, habits, and even development and physiological activities. Pheromones are produced by glands in the body and are directly excreted and distributed outside the body. Pheromones spread to other individuals through conducting media such as air and water. There are pheromones from lower animals to higher mammals. Because pheromones are transmitted by the external environment, they are also called pheromones. The chemical substances that interact between biological species are called interspecific pheromones or heterogeneous pheromones. Heterogeneous pheromones in insects include egoism, altruism and signal pheromones. Pheromones mainly include sex pheromones, aggregation pheromones, warning pheromones, tracer pheromones and marker pheromones.