The Bystraya River is one of the longest Kamchatka rivers, its length is 275 km. Bystraya flows from north to south along the southern spurs of the Sredinny Range, then turns southwest to the Sea of Okhotsk and merges in the downstream with the Plotnikova River, forming the Bolshaya River, one of the largest rivers of the peninsula.
The river plays an important role in the reproduction of Kamchatka salmon fishes. In its tributaries and headwaters, all species of Pacific salmon spawn: pink salmon, chum salmon, coho salmon, chinook salmon, sockeye salmon, sima salmon. Grayling, rainbow trout and east siberian char and especially numerous loach is often found in the river. Passing form of rainbow trout - Kamchatka salmon is also found.