Why does a male angler fish have to find a female after she is born?

Male anglerfish have to find a female after she is born because the females are significantly larger and possess the bioluminescent lure used to attract prey. In the deep-sea environment where they live, encounters between males and females can be rare. When a male finds a female, he attaches himself to her, becoming a permanent mate and relying on her for nutrition, ensuring reproductive success in a challenging environment. This unique adaptation allows for efficient mating and increases the chances of survival for their offspring.