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Aquaculture, the farming of aquatic organisms such as fish, crustaceans, mollusks, and aquatic plants, has emerged as a vital component of the agriculture and allied sectors. It plays a significant role in enhancing food security, generating employment, and contributing to national economies. However, the expansion of aquaculture has also introduced environmental concerns, particularly regarding pollution. Aquaculture-related pollution arises from multiple sources and can significantly impact aquatic ecosystems, water quality, biodiversity, and even human health. Aquaculture operations, especially intensive and semi-intensive systems, often involve the use of artificial feed, fertilizers, antibiotics, and other chemicals. These inputs, if not properly managed, can lead to the accumulation of organic and inorganic waste in water bodies. One of the primary pollutants from aquaculture is excess feed and fish excreta. Uneaten feed and fecal matter settle at the bottom of ponds or enclosures, leading to the buildup of organic matter. The decomposition of this organic material consumes dissolved oxygen in the water, creating hypoxic or anoxic conditions that can be _____ _____ ________ ____ ______ ____ __________ ___ _____.
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