The fish species that knows when you are watching them

Emperor cichlids, large fish native to Lake Tanganyika in Africa, don't like being stared at, especially if someone's gaze is directed at their offspring. Those are the findings of a new study published in the journal Royal Society Open Science. In animal societies, gaze can provide information to others without vocal signals. For example, when one individual in a group notices that a predator is watching, the others can pick up on it and become more alert.