Predicted to enable voltage-gated chloride channel activity. Predicted to be involved in chloride transport. Predicted to act upstream of or within monoatomic ion transmembrane transport. Predicted to be located in membrane. Predicted to be part of monoatomic ion channel complex. Predicted to be active in plasma membrane. Is expressed in gill. Human ortholog(s) of this gene implicated in Becker disease; Thomsen disease; and myotonia congenita. Orthologous to human CLCN1 (chloride voltage-gated channel 1).