FMRFamides and FMRFamide-like peptides are neuropeptides. SAEPFGTMRF-amide inhibits the activity of dissected pharyngeal myogenic muscle system. Each flp gene is expressed in a distinct set of neurons. Flp-3 is expressed in the IL1 and PQR neurons. Expressed from the comma stage of embryogenesis, during all larval stages, and in adults. Belongs to the FARP (FMRFamide related peptide) family.