Enables nicotinic acid receptor activity. Involved in negative regulation of lipid catabolic process and positive regulation of adiponectin secretion. Predicted to be located in cell junction and plasma membrane. Predicted to be integral component of membrane. Predicted to be active in membrane. Orthologous to human HCAR2 (hydroxycarboxylic acid receptor 2) and HCAR3 (hydroxycarboxylic acid receptor 3). [provided by Alliance of Genome Resources, Apr 2022]