Chapter 3: Fishes Habitat DegradaƟon: Possible Reasons

Abstract

Freshwater ecosystems play a crucial role in maintaining global biodiversity and supporting human livelihoods. Rivers, lakes, streams, and wetlands provide habitat for a wide variety of fish species that are ecologically, economically, and culturally important. Despite their significance, freshwater systems are among the most threatened ecosystems worldwide, with freshwater fish experiencing faster rates of decline than terrestrial or marine species (Dudgeon et al., 2006). One of the primary causes of these declines is habitat degradation. Habitat degradation occurs when natural environmental conditions are altered in ways that reduce the suitability of habitats for native organisms. For freshwater fish, such degradation disrupts essential ecological processes, leading to reduced survival, reproduction, and long-term population stability.