Aquatic toxicity tests are essential tools in understanding how pollutants impact aquatic life, particularly for aquaculture sustainability. By examining contaminants such as pesticides, heavy metals, and industrial chemicals, these tests help identify toxic thresholds that can affect fish, invertebrates, and plants. The tests evaluate chemical exposure at varying concentrations to determine both short- and long-term effects on ecosystems critical to aquaculture. Regulating pollutants through aquatic toxicity testing protects water quality and biodiversity, reducing the risk of ecosystem imbalances and safeguarding species essential to aquaculture. Such testing is crucial for developing industry guidelines, promoting responsible practices, and ensuring healthier aquatic environments in marine and freshwater farms.