Zebrafish - Hatching Period

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

Zygote Period / Cleavage Period / Blastula Period / Gastrula Period / Segmentation Period / Pharyngula Period / Larval Period / Home Page