Predicted to enable 3',5'-cyclic-nucleotide phosphodiesterase activity. Acts upstream of or within phototransduction, visible light; retinal cone cell development; and visual perception. Predicted to be located in plasma membrane. Is expressed in brain and retina. Used to study achromatopsia. Human ortholog(s) of this gene implicated in cone-rod dystrophy. Orthologous to human PDE6C (phosphodiesterase 6C). [provided by Alliance of Genome Resources, Apr 2022]