Zebrafish - Hatching Period

From Embryology
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The duration of this period is from 48 to 72hours

  • Transitions from Long-Pec to Protruding-mouth
  • In this period, primary organ systems develop and cartilage development begins
  • Pectoral fins are now elongated with a flat blade but still developing
  • Jaws and Gills are also developing along side the pectoral fins
  • Olfactory placodes are now developed in the anterior of the eye
  • Hair Cells have differentiated
  • The mouth is wide open and protrudes anteriorly just beyond the eye
  • The first visible bone in the zebrafish, the cleithrum, can be seen between the first two myotomes
  • Sub-intestinal vein is also prominent ventrally to the gut tract formation

Cleavage Period / Blastula Period / Gastrula Period / Segmentation Period / Pharyngula Period / Hatching Period / Larval Period / 2009 Project 3 - Zebrafish

Student animal model - zebrafish project contributed page 2009.