Q: What fish is born with eyes on both sides of its head and then changes to have both eyes on the same side?
A: Flounder are born upright with normally-placed eyes which migrate to one side while the fish is about 1/2 inch long. For the winter flounder, the eyes migrate to the right side of the fish's body. For summer flounder the eyes migrate to the left side. Having both eyes on one side of their body allows them to sit on the bottom of the ocean with both eyes searching for prey.