Anglers on the Norfolk and Suffolk Broads and the region's rivers are being reminded they "must adhere to the rules" and put their rods and nets down for the close of the coarse fishing season.
The close season for coarse fishing has now come into effect and runs until June 15 to protect fish when they are spawning and support vulnerable stocks.
Duncan Holmes, director of the Broads Angling Service, said: "It is important that anglers adhere to the rule so we can allow nature to do its thing.
"The Broads is a sport fishery, on our waters we catch and release doing minimal harm possible to the fish.
"Populations in lakes are controlled, whereas in rivers we do not control fish populations, in order to retain healthy populations this time of the season is important to give our rivers a chance to blossom."
Notices have been displayed in key fishing areas reminding anglers of the law.
Mr Holmes said: "Most anglers recognise the rule for the break in the river season, the Environment Agency has been working hard to ensure reminders are displayed across areas along the Broads."
Kevin Austin, deputy director for agriculture, fisheries and the natural environment at the Environment Agency, said: "The close season aims to protect fish during this delicate time to ensure they remain healthy and resilient.
"Anglers who do still want to get out on the banks during the close season can still visit many still waters and canals, depending on landowner agreement."
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Throughout the close season, Environment Agency officers conduct patrols to ensure anglers respect the no-fishing period.
The coarse fish close season applies to rivers, streams, drains and some canals, as well as certain still waters within specified Sites of Special Scientific Interest (SSSI).
Those who suspect illegal fishing should report it to the Environment Agency’s incident hotline on 0800 80 70 60
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