Figure 1. – A in Tooth shape in teleosts and its link to tooth spacing and replacement

Figure 1. – A: Scanning electron micrograph of the pharyngeal dentition of a one month-old zebrafish (10.4 mm SL). Note considerable differences in tooth shape in the different positions, and micro-ornamentations (arrowheads) at the tooth tip. Anterior to the left, dorsal to the top. B: Detail of the micro-ornamentations of the tooth tip. Note major cusp (asterisk), minor cusp (arrow), and basal protuberance (arrowhead). C: Transmission electron micrograph of a developing replacement tooth in a one month-old zebrafish (9 mm S.L.). Note that the minor cusp is developing with just one odontoblast extending into it (arrow). Scale bars: A = 50 µm; B = 10 µm; C = 10 µm.