Enables G protein-coupled peptide receptor activity. Acts upstream of or within positive regulation of cytosolic calcium ion concentration involved in phospholipase C-activating G protein-coupled signaling pathway. Predicted to be integral component of membrane. Predicted to be integral component of plasma membrane. Is expressed in brain. Orthologous to human RXFP3 (relaxin family peptide receptor 3). [provided by Alliance of Genome Resources, Apr 2022]