Do you know the peculiarities of fish eyes?

Geet99530

"We often see fish in the market with their eyes wide open, and you might wonder why fish keep their eyes open even after death. Do fish close their eyes when they sleep? Do fish have good eyesight? Does eating fish eyes really protect our vision?

Firstly, it can be confirmed that fish, whether sleeping or dead, keep their eyes open, which is related to the structure of their eyes.

While humans' upper and lower eyelids overlap to encase the eyeball when closed, fish lack eyelids, rendering them unable to close their eyes, so they always keep their eyes open.

Secondly, aside from the absence of eyelids, fish eyes have a unique structure."

Simoni797

I really didn't know about this.

Kitu11

Fish keep their eyes open whether they are sleeping or dead. Does this apply to mermaids too? How spooky!

Kahn332

Hahaha, it seems that fish do sleep, but they sleep with their eyes open!

Kalkin995

Fish don't have eyelids; they truly don't close their eyes even in death.