Genetics plays a pivotal role in the selective breeding of aquatic animals, aiming to improve growth rates, disease resistance, and adaptability to varying environmental conditions. By understanding the genetic makeup of fish species, breeders can select desirable traits that enhance productivity and resilience. Advanced techniques, such as genome editing and molecular markers, aid in identifying specific genes linked to these beneficial traits. Genetic research in aquaculture also supports conservation efforts by helping to maintain biodiversity and genetic diversity in wild populations. Ethical considerations are essential in this field, as genetic modifications must be managed carefully to avoid potential ecological and genetic repercussions. Overall, genetics offers immense potential to drive sustainable growth in the aquaculture sector.