Predicted to enable G protein-coupled receptor activity and GTPase activator activity. Predicted to be involved in several processes, including myoblast fusion; neuron remodeling; and regulation of dendrite morphogenesis. Predicted to act upstream of or within maintenance of synapse structure; motor learning; and positive regulation of synapse assembly. Predicted to be located in plasma membrane. Predicted to be active in postsynapse and synaptic cleft. Predicted to be integral component of plasma membrane. Orthologous to human ADGRB3 (adhesion G protein-coupled receptor B3). [provided by Alliance of Genome Resources, Apr 2022]