What’s That One Fish With the Eyes Close Together?

What’s That One Fish With the Eyes Close Together? The fish with the eyes close together you’re likely thinking of is the flounder, a remarkable flatfish species known for its side-swimming behavior and unique eye placement.

In flounders, one eye migrates to the other side of their body as they mature, allowing them to rest flat on the ocean floor while keeping both eyes on their surroundings.

What Makes the Flounder’s Eyes So Unique?

Flounders and other flatfish, such as soles and halibuts, undergo a fascinating transformation called eye migration.

When they hatch, they resemble normal fish, with an eye on each side of their head.

As they grow, however, one of the eyes gradually shifts to join the other, resulting in both eyes being on the same side.

This migration allows flounders to lie flat on the seabed, blending into their environment while keeping an eye on predators and prey.

According to marine biologist Dr. Michael Taylor, “This evolutionary adaptation is one of the most striking examples of how environmental pressures shape organisms. Flounders evolved to blend perfectly with the ocean floor, and their eye placement gives them a distinct advantage as ambush predators.”

Their remarkable camouflage and ambush techniques make them highly successful hunters in shallow coastal waters.

Types of Flatfish with Close-Set Eyes

Several flatfish species exhibit this extraordinary trait of eye migration. Some of the most common types include:

• Flounder: Known for their sideways swimming and ability to blend into sandy and rocky bottoms.

• Sole: A popular flatfish species, prized in culinary circles for its mild, delicate flavor.

• Halibut: The largest of the flatfish family, halibuts can reach enormous sizes but still display the classic eye migration.

• Turbot: A highly sought-after flatfish in the culinary world, renowned for its diamond-shaped body and firm texture.

• Plaice: Plaice, a popular flatfish in the UK known for its orange spots, rounded dorsal fins, and distinct head, is favored by both commercial harvesters and sea anglers.