Enables G protein-coupled receptor binding activity and neuropeptide hormone activity. Involved in several processes, including ion homeostasis; negative regulation of insulin secretion; and peptide hormone secretion. Located in several cellular components, including axon terminus; dendrite; and perikaryon. Orthologous to human NPFF (neuropeptide FF-amide peptide precursor). [provided by Alliance of Genome Resources, Apr 2022]