When you think of the edible parts of a fish, chances are its eyes won't make your list. But you can actually eat those soft orbs, provided you cook them right.

Scientists have developed a groundbreaking 3D eye-tracking method to reveal how fish perceive their surroundings and coordinate in schools.

And this is where the new eye tracking method comes into play. It is not that easy to reconstruct the field of view of free-swimming fish. Just tracking the position of the eyes is not enough ...