Predicted to enable G protein-coupled photoreceptor activity. Predicted to be involved in G protein-coupled receptor signaling pathway; cellular response to UV-A; and phototransduction. Predicted to act upstream of or within protein-chromophore linkage and signal transduction. Located in photoreceptor outer segment. Is expressed in several structures, including brain; eye; genitourinary system; gut; and liver and biliary system. Human ortholog(s) of this gene implicated in blue color blindness. Orthologous to human OPN1SW (opsin 1, short wave sensitive). [provided by Alliance of Genome Resources, Apr 2022]