Enables lactate transmembrane transporter activity. Involved in several processes, including behavioral response to nutrient; plasma membrane lactate transport; and regulation of insulin secretion. Located in plasma membrane and synapse. Is expressed in several structures, including alimentary system; brain; genitourinary system; integumental system; and sensory organ. Human ortholog(s) of this gene implicated in familial hyperinsulinemic hypoglycemia 7. Orthologous to human SLC16A1 (solute carrier family 16 member 1). [provided by Alliance of Genome Resources, Apr 2022]