Cover picture: Connexin35 (Cx35) mediates electrical transmission at identifiable mixed synaptic contacts on the goldfish Mauthner cell. Superimposed recordings represent normalized averaged responses of a unitary mixed, electrical and chemical, synaptic potential (red) and its corresponding presynaptic spike (black). Left, Confocal image of one of these terminals labeled with Cx35 (red). Multiple puncta are observed, because each of these terminals contains ~200 gap junction plaques (the Mauthner cell was previously injected with neurobiotin; green). Background: Freeze-fracture immunogold labeling of one of these terminals identified by confocal gridmapping of the Mauthner cell confirms the presence of Cx35 in the gap junction plaques (red). For details, see the article by Pereda et al. in this issue (pages 7489–7503).