Enables identical protein binding activity and signaling receptor activity. Involved in B-1 B cell lineage commitment and regulation of B cell differentiation. Acts upstream of or within several processes, including leukocyte chemotaxis involved in inflammatory response; negative regulation of leukocyte migration; and negative regulation of respiratory burst involved in inflammatory response. Predicted to be located in membrane. Predicted to be integral component of membrane. Orthologous to human SLAMF8 (SLAM family member 8). [provided by Alliance of Genome Resources, Apr 2022]