Monitoring of finfishes is a very tedious task for knowing the abundance and diversity of the fish species in lotic water system. River Beas is 460 km long originates from North-Western Himalaya in Himachal Pradesh to its culmination with river Satluj in western Punjab. River Beas enters the plain of Punjab at Talwara after passing through Pong dam (Himachal Pradesh) and flows towards Harike via Distt Hoshiarpur, Gurdaspur, Amritsar and meeting point of river Satluj at Harike Pattan in Distt. Tarn Taran covering an area about 165 km in Punjab. River Beas has catchment area of 12,130 km2 and drains 25900 km2. The commercial as well as subsistence fishing activities are in practice by fishermen, using different types of nets and gears. Variety of fish species were monitored and studied from the bulk of catches at different landing sites of river Beas as well as in fish market at Talwara, Hoshiarpur, Mirthal area, Mukerian, Gurdaspur, Shalapattan, Amritsar, Harike Pattan during many field visits. Water samples were also collected from different spots in upper stretch of the river Beas in Punjab. The fish diversity of 62 species were identified from river Beas under 43 genera which include Notopterus, Gudusia, Catla, Labeo, Cirrhinus, Ctenopharyngodon, Hypophthalamichthys, Cyprinus, Schizothorax, Tor, Barilius, Chela, Crossocheilus, Aspidoparia, Salmostoma, Danio, Esomus, Garra, Amblypharyngodon, Puntius, Pseudambassis, Chanda, Botia, Osteobrama, Aoriichthys, Wallago, Ompok, Rita, Bagarius, Clupisoma, Eutropiichthys, Mystus, Gagata, Glossogobius, Anabas, Colisa, Hemiramphus, Xenentodon, Channa, Clarias, Heteropneustes, Macrognathus, Mastacembelus. The percentage catch composition of fish species were recorded as IMC-32%, Common carp-25%, Long whiskered catfish -7%,Giant river catfish-7%, Grass carp-2%, Minor carps-5%, Featherback-2%, Mahseer-2%, Snowtrout-2%, Magur-0.5%, Singhi-0.5%, miscellaneous species-15%. Percentage fish catch compositions were found to be varied during different season and these fishes harvested from variety of nets/gears. However, ichthyofaunal diversity identified from the river Beas revealed that water is favourable for the survival of variety of finfishes. The present finding also emphasizes about certain factors influencing fishery in the river Beas.