Variability and relationships of fish visual pigments.
D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D004777:Environment; D005399:Fishes; D066298:In Vitro Techniques; D012168:Retinal Pigments; D012621:Seasons; D013045:Species Specificity; D013053:Spectrophotometry; D014801:Vitamin A
D012168:Retinal Pigments; D014801:Vitamin A