Wolftrap Angler.
With most kinds of animals the males are larger than the females, but not the anglerfish. The females are always larger, some grow as large as three feet, while the average male is less than 5 cm long. The male fish attaches himself to the female like a parasite. Her skin grows around him and some of his organs disappear making him completely dependant on her. He will never leave her, but he does still play a very important role. He fertilizes the eggs so that there will be more anglerfish.
The lights are used for other reasons, too. Some scientists believe that the fish can recognize each other by the different light patterns, and so are drawn to each other when it’s time to mate. Scientists also think the lights and the creatures enormous eyes allow it to see. Another reason for the light is that the anglerfish migrates closer to the surface each night. As the fish gets to parts of the water where sunlight filters down it would be an easy target for predators because animals looking up would see the perfect outline of its body. The lights help camouflage the fish be resembling the flickers of light from the sun.
If you are ever out on the ocean you will never see these fish. They are used to living in the deep, deep water at least 400 meters below the surface. There is a lot of pressure in this deep water from all the water above the fish. Because of this pressure the deep sea fish can not survive if brought to the surface.
