A multiregional brain circuit allows larval zebrafish to track where they are, where they’ve been, and how to get back to their original location after being displaced, researchers report. The results shed light on how vertebrates track their displacements to later return to previous locations.A multiregional brain circuit allows larval zebrafish to track where they are, where they’ve been, and how to get back to their original location after being displaced, researchers report. The results shed light on how vertebrates track their displacements to later return to previous locations.