This Deep-Sea Fish Has the Most Types of Opsins Among Vertebrates

The silver spinyfin has an extraordinary diversity of rod photopigments, which researchers propose may allow it to see color in the deep, dark sea.

Frontiers Benthic visual adaptation by fine-tuning light sensitivity in Japanese flounder (Paralichthys olivaceus)

Vision using multiple distinct rod opsins in deep-sea fishes

Vision using multiple distinct rod opsins in deep-sea fishes

Cells, Free Full-Text

Molecular Ecology, Molecular Genetics Journal

Dynamic light filtering over dermal opsin as a sensory feedback system in fish color change

Opsin gene expression from all species surveyed. Triangle plots

Deep-sea fish - Wikipedia

Deep-sea fish - Wikipedia