Predicted to enable calcium activated cation channel activity; calcium channel activity; and voltage-gated ion channel activity. Predicted to be involved in fertilization; flagellated sperm motility; and sperm capacitation. Predicted to be located in sperm flagellum. Predicted to be part of CatSper complex. Orthologous to human CATSPER2 (cation channel sperm associated 2). [provided by Alliance of Genome Resources, Apr 2022]