Enables 11-cis retinal binding activity and G protein-coupled photoreceptor activity. Involved in entrainment of circadian clock by photoperiod; hyaloid vascular plexus regression; and phototransduction, UV. Predicted to be located in cytoplasm and plasma membrane. Predicted to be integral component of plasma membrane. Orthologous to human OPN5 (opsin 5). [provided by Alliance of Genome Resources, Apr 2022]