Gene banking is the preservation of genetic material from aquatic species for future breeding, research, and conservation purposes. By storing eggs, sperm, or DNA from various fish and marine organisms, gene banks provide a genetic backup, protecting biodiversity and supporting breeding programs. This is particularly important for endangered species or populations affected by climate change and overfishing. Cryopreservation techniques ensure the long-term viability of stored genetic material. Gene banks also serve as valuable resources for reintroducing lost genetic diversity into populations, promoting species resilience and adaptation. In addition to conservation, gene banks support aquaculture by providing genetic resources for selective breeding programs.