Aquatic pollution and its effects on fish health

Aquatic pollution, driven by anthropogenic activities, poses a significant threat to fish health and aquatic ecosystems. This study investigates the impact of various pollutants-plastic microbeads, pesticides, mercury, crude oil, pharmaceuticals, and plastic debris-on fish species found in Bihar, India. Laboratory experiments and field surveys were conducted to assess the effects of these pollutants on fish health, with parameters including growth rate, reproductive success, organ health, and mortality. The results reveal that pollutants cause a range of adverse effects, including organ damage, hormonal disruption, reproductive failure, and increased mortality rates in exposed fish. Plastic microbeads and larger debris cause physical damage, while pesticides and mercury disrupt endocrine functions and cause bioaccumulation. Crude oil impairs respiratory function, and pharmaceuticals suppress immune responses. These findings highlight the urgent need for pollution control measures, sustainable agricultural practices, improved waste management, and stricter regulations to protect fish populations and preserve aquatic ecosystems. This research emphasizes the critical role of reducing pollutant discharge to safeguard aquatic biodiversity and human food security.