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.

Opsin gene expression in larval and adult deep-sea fishes supports a conserved cone-to-rod pathway in teleost visual development

Evolution of the vertebrate eye: opsins, photoreceptors, retina and eye cup. - Abstract - Europe PMC

Eawag - Swiss Federal Institute of Aquatic Science and Technology - Eawag

Vision using multiple distinct rod opsins in deep-sea fishes

Light receptors determine the behavior of fla

The evolution of red color vision is linked to coordinated rhodopsin tuning in lycaenid butterflies

Whale shark rhodopsin adapted to deep-sea lifestyle by a substitution associated with human disease

The deep sea is a hot spot of fish body shape evolution - Martinez - 2021 - Ecology Letters - Wiley Online Library

How Fish See in the Deep Dark Sea, by Robert Roy Britt

Cells, Free Full-Text

The evolutionary history and spectral tuning of vertebrate visual opsins - ScienceDirect

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