Biodiversity defines an aquatic system’s potential and trophic status. It is critical to have a thorough understanding of the constituent biota, particularly to conserve and manage inland water resources such as rivers, reservoirs, ponds, and wetlands. Fish are an important component of these aquatic bodies. A wide variety of fish thrive in these settings, taking advantage of the various niches available. The group promotes other species of animal diversity and serves as an excellent indication of healthy ecosystems.
In Bihar (India) over the past three to four decades, several factors have contributed to the rapid decline in local species of fish populations, including pollution, urbanization , habitat loss, and steady eutrophication of the water body. The threat to the fish population is caused by other activities too, including barrages, wastewater dumping, overfishing, sedimentation, changes in land use patterns, etc.
To preserve the native fish population at the regional level, the aquatic biodiversity conservation process necessitates the identification of certain river segments that are suitable for designation as aquatic reserves. An integrated and sustainable fisheries management plan should be created since the risks to the river’s fish biodiversity are steadily getting worse and fish conservation is becoming more and more important. A comprehensive strategy that incorporates the ideas of sustainable development and conservation measures has to be used to preserve these priceless resources.