Enables opsin binding activity. Predicted to be involved in detection of light stimulus involved in visual perception. Predicted to act upstream of or within visual perception. Located in photoreceptor outer segment membrane. Is expressed in photoreceptor layer outer segment and retina. Human ortholog(s) of this gene implicated in retinitis pigmentosa 36. Orthologous to human PRCD (photoreceptor disc component). [provided by Alliance of Genome Resources, Apr 2022]