Enables lysophosphatidic acid receptor activity. Acts upstream of or within cartilage development; hemangioblast cell differentiation; and vasculature development. Predicted to be located in cell surface and membrane. Predicted to be active in cytoplasm and plasma membrane. Is expressed in several structures, including cardiovascular system; mesoderm; musculature system; nervous system; and pleuroperitoneal region. Orthologous to human LPAR1 (lysophosphatidic acid receptor 1).