Fisheries officers are stocking the River Wear in County Durham with dozens of bream, at the request of anglers.
The move follows an Environment Agency workshop which identified a local coarse fishermen "wish list".
Stocks were low due to poor spawning years, weirs causing an obstruction to fish migration and the fish being eaten by cormorants.
About 200 bream will be released into the river at Chester-le-Street and at Durham later.
Lloyd Atkinson, from Chester-le-Street Angling Club, said: "We were delighted that the Environment Agency has carried out the wishes of our members.
"The bream will enhance the fishery for years to come."