Diversity of ichthyofauna in freshwater system in bega watershed, prosperidad, agusan del sur, Philippines

This study aimed to determine the diversity of the fish species in the freshwater system of Bega watershed, Mabuhay, Prosperidad, Agusan del Sur, Philippines. Sampling was carried out on May 8-14, 2014 using fish net, hand net, spear, and the hook-and-line method. Six species were recorded of which three are endemic, one native, and two are introduced species. Low species diversity and a more or less even distribution were recorded. The most abundant species was the endemic Dermogenys pusilla. The canonical correspondence analysis results showed that fish assemblage was affected by dissolved oxygen, pH, water temperature, and water depth.