Beholderfish

Beholderfish were a kind of one-eyed fish. Though primarily a deep-sea species, they could be fished for in the dark caverns of the Sea of Moving Ice.

Description
The beholderfish were named for their resemblance to beholders, sharing their single "main" eye and having luminous appendages that resemble the latter's eyestalks.

Appearances

 * Video games
 * Neverwinter