Zebrafish embryo (VIDEO) Chan Zuckerberg Biohub This video is under embargo. Please login to access this video. Caption A zebrafish embryo at 20 hours of development, captured with a light-sheet microscope designed and built at CZ Biohub San Francisco. Credit CZ Biohub San Francisco Usage Restrictions with credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.