Predicted to enable 3',5'-cyclic-AMP phosphodiesterase activity and 3',5'-cyclic-GMP phosphodiesterase activity. Predicted to be involved in cAMP-mediated signaling and visual perception. Predicted to act upstream of or within signal transduction. Human ortholog(s) of this gene implicated in cone-rod dystrophy. Orthologous to human PDE6C (phosphodiesterase 6C).