Eel's eggs are very small, it is said that the spawning place in the deep sea, in order to ensure that there are as many offspring survive, the mother must produce as many eggs, so the energy in the body is used to contain the eggs, similarly, in order to make more eggs fertilized, the male fish also need to consume more physical strength, for a fish usually live in freshwater, eel came to the deep sea has been consuming a lot of physical strength, coupled with the large number of spawning, the body of de-stressed and exhausted! It's not surprising.

The octopus, sturgeon, and salmon are also known to die after spawning, and they all carry a large number of eggs.