Fig. 6
From: Embryogenesis and early larval development in bocachico (Prochilodus magdalenae) in Colombia
A Prochilodus magdalenae, developmental segmentation and organogenesis period, the anlage organ or primordium of the CNS is recognized, H&E 20X. Abbreviations: P: primordium of the CNS; YG: yolk granules. B Prochilodus magdalenae segmentation period. (A) Life embryos with: 4–6 somites; (B) 18 somites; (C) 25 somites. The optic placodes become discernible as solid masses, the head subdivision is more apparent, and the tail bud is more prominent. Abbreviations: E: eye; K: Kupffer’s vesicle; M: myomere; S: shield; SM: somites; Y: yolk; YE: yolk extension. C Prochilodus magdalenae segmentation period. The neural tube is recognized. Further, the somites, tail, and eye can be observed, H&E 4x. Abbreviations: NT: neural tube; E: eye; S: somite; YS: yolk sac