the.com/flatfish
A fish that spent its childhood deciding one eye was simply extra.
means A bottom-dwelling fish like a flounder or halibut whose body is flattened sideways, with both eyes migrated to one side as it matures.
from Simply 'flat' + 'fish,' a plainly descriptive English compound — no hidden story here. The real marvel is biological, not etymological: flatfish hatch symmetrical, swimming upright like ordinary fish, and only during a dramatic larval metamorphosis does one eye migrate across the skull to join the other, as the fish tips over to spend its life lying on the sea floor.
- eye migration
- One eye crosses the skull during larval development
- camouflage skill
- Can change skin pattern to match seafloor texture
- species range
- Includes flounder, halibut, sole, and plaice
- blind side
- The downward-facing side stays pale and eyeless forever