Predicted to enable gap junction channel activity and identical protein binding activity. Acts upstream of or within lens development in camera-type eye. Located in plasma membrane. Is expressed in embryo; eye; head; lens; and testis. Used to study cataract 1 multiple types. Human ortholog(s) of this gene implicated in cataract and cataract 1 multiple types. Orthologous to human GJA8 (gap junction protein alpha 8). [provided by Alliance of Genome Resources, Apr 2022]