Zebrafish development is a research area that focuses on studying the embryonic and post-embryonic development of zebrafish, a commonly used model organism in biological research. Zebrafish embryos are transparent, develop quickly, and share many genetic and developmental similarities with humans, making them an ideal model for studying vertebrate development. Researchers use zebrafish to investigate a wide range of developmental processes, including organ formation, tissue regeneration, and genetic regulation of development. This research area has provided valuable insights into evolutionary conservation of developmental processes and has helped advance our understanding of human development and disease.