English: This time-lapse sequence shows the dynamics of innervation of a neuromast at a quiescent state (neuromast of figure 3 E–L). A single mem-TdTomato labeled neuron is followed in a sqET4 transgenic fish. We can observe thin neurites that are long and very motile, extending and retracting very rapidly. Their contacts with the hair cells are short-lived. In contrast, bulged neurites are shorter, less motile and establish stable associations with hair cells. The larva was mounted in 1% low-melting-point agarose, maintained at 21°C and images were acquired with a Leica TCS SPE confocal microscope with a 40× oil immersion objective every 30 minutes during 10,5 hours. Z-stacks were acquired at 0.8 µm intervals.