some information about unknown Marine fish

There is no brain in a sea fish named Star Fish.Instead of the brain, they do all their work through a kind of nervous system. The question is, why are they called fish or fish? They are not actually fish. Because they are under water, they are called fish or star fish.

How many animals in the world! There is also an animal that can not be seen from such a large size. But in our world 95% of the animals are smaller than a chicken egg.