Predicted to enable GTPase activator activity. Predicted to be involved in several processes, including activation of GTPase activity; negative regulation of small GTPase mediated signal transduction; and phagocytosis, engulfment. Predicted to be active in phagocytic cup. Is expressed in brain; pharyngo-tympanic tube; and vibrissa. Orthologous to human ARHGAP25 (Rho GTPase activating protein 25). [provided by Alliance of Genome Resources, Apr 2022]