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.

The evolution of the green-light-sensitive visual opsin genes (RH2) in teleost fishes - ScienceDirect

Deep Sea Fish Encyclopedia MDPI

2 Vertebrate opsin evolution. A summary table showing the presence of

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

Green‐shifting of SWS2A opsin sensitivity and loss of function of RH2‐A opsin in flounders, genus Verasper - Kasagi - 2018 - Ecology and Evolution - Wiley Online Library

Evolutionary ecology of the visual opsin gene sequence and its expression in turbot (Scophthalmus maximus), BMC Ecology and Evolution

Hyperspectral Vision in Sea Depth - F4News

Evolutionary ecology of the visual opsin gene sequence and its expression in turbot (Scophthalmus maximus), BMC Ecology and Evolution

Unusual A1/A2–visual pigment conversion during light/dark adaptation in marine fish - ScienceDirect

Deep-sea fish - Wikipedia