title: Photic control of the proportions of two visual pigments in a fish.
mesh_terms: D000220:Adaptation, Biological; D000447:Aldehydes; D000818:Animals; D003530:Cyprinidae; D003624:Darkness; D004777:Environment; D005399:Fishes / Q000502:physiology*; D008027:Light; D008074:Lipoproteins; D010786:Photoreceptor Cells; D012168:Retinal Pigments; D012621:Seasons; D013057:Spectrum Analysis; D013974:Thyroxine / Q000494:pharmacology; D013997:Time Factors; D014801:Vitamin A
chemical_list: D000447:Aldehydes; D008074:Lipoproteins; D012168:Retinal Pigments; D014801:Vitamin A; D013974:Thyroxine