Uncharismatic Fact of the Day
Calling the Anableps fishes “four-eyes” isn’t an insult-- these species actually have four eyes! Individuals have two eyeballs, and each eyeball has two pupils and two corneas. This allows the Anableps fishes to see above and below the water at the same time, and spot potential prey and predators twice as easily.
(Image: Largescale foureye fish (Anableps anableps) by Joel Sartore)















