Predicted to enable zinc ion transmembrane transporter activity. Acts upstream of or within intracellular zinc ion homeostasis. Predicted to be located in Golgi apparatus and endoplasmic reticulum membrane. Is expressed in brain; eye; gill; muscle; and optic cup. Human ortholog(s) of this gene implicated in agammaglobulinemia 9. Orthologous to human SLC39A7 (solute carrier family 39 member 7).