There is a strange fish called the red silk fish growing in the Red Sea, which is not only famous for its protective red color, but also has a very surprising habit ---- of transforming females into males.
Red Silk Fish and live in groups, generally from a dozen to dozens of a large family, in addition to the leader of the knock page is a male fish, the rest are all female fish. The male fish body solid, beautiful appearance, just like the head of the family. Strange, when the head of the male fish died, the "family" in the body of the most healthy and strong female fish will become a male fish.
Where is the secret of the females becoming males? Scientists did an interesting experiment: with two transparent glass tank, a tank with a male fish, another tank with more than a dozen female fish, two tanks are very close to the tank, the fish can see each other. In this way, no matter how much time passes, the female fish in that tank will not turn into male fish. If the two tanks are farther apart, or the middle with a cloth, then, after a long time, one of the female fish will become a male color from this, the scientists drew a preliminary conclusion: the red silk fish from female to male is through their visual perception occurs after.
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