Predicted to enable calcium ion binding activity. Acts upstream of or within photoreceptor cell maintenance. Located in photoreceptor outer segment membrane. Is integral component of plasma membrane. Is expressed in several structures, including alimentary system; central nervous system; heart; metanephros; and sensory organ. Human ortholog(s) of this gene implicated in cone-rod dystrophy 15. Orthologous to human CDHR1 (cadherin related family member 1). [provided by Alliance of Genome Resources, Apr 2022]