This follows the recent announcement of similar byelaws on the River Wye and is aimed at allowing more migratory fish to survive and spawn upstream to produce more juvenile fish to boost the population in these rivers, where the salmon and sea trout fishing has been improving over recent years and EA Wales has invested in building fish passes and removing barriers so that fish can move upriver for spawning.
The new rules allow anglers to continue with their sport whilst safeguarding the fish stocks and anyone contravening the byelaws could face prosecution and a substantial fine.