This information bite addresses the phenomenon of reluctant hatching of fish embryos. Hatch synchronization is always targeted in order to allow better hatchery management and reduce size differences among hatched larvae or fry. In this situation, force hatch approach could be adopted. This practice works directly on embryo’s hatching glands and its enzymes. Examples of methods include light, water renewal, and temporary shut-down of water or air in egg incubators.
[important]Force hatch of fish embryos[/important]