Fig. 2

Comparison of caudal fin regeneration between zebrafish (Danio rerio) and the Garfish (Atractosteus tropicus). (A) adult individual of zebrafish. (B) juvenile Garfish. (C – K) different time points pre- and post-amputation of the caudal fin. It takes about one month to regenerate a whole caudal fin in zebrafish. (K – R) Caudal regeneration in Garfish at different time points for about two months. (M – N) Initial steps of caudal regeneration in Garfish from 0 to 13 dpa (days post-amputation). At 4 dpa we detected the first visible signs of tissue regrowth that progress fast as could be seen at 13 dpa (see insets in white dotted boxes in O and P). Scale bars are (A) 5 mm (B) 20 mm (D) 5 mm (L) 10 mm (M) 2 mm. Figures M – P are shown twice enlarged at the bottom of the figure