Page last updated at 16:42 GMT, Friday, 1 August 2008 17:42 UK

Thousands of fish dead in river

Dead fish
Some of the fish which were found in a tributary of the River Trothy.

Experts are looking into what has killed 20,000 fish in a stretch of river which feeds into the Wye.

A 10km stretch of river has been affected at Llantilio Crossenny, between Monmouth and Abergavenny.

It is suspected that agricultural pollution may have killed 1,700 brown trout as well as thousands of minnows and bullhead fish.

Environment Agency Wales say it will take years for the trout population in that area to re-populate.

A survey following the discovery of the dead fish in a tributary of the River Trothy - which flows into the Wye - found that many small species were also killed.

Amongst the other 18,000 fish which were killed there were over 200 lamprey, 70 eel and nearly 15,000 bullheads - all of which are described as important conservation species in the UK Biodiversity Action Plan.

The Countryside Council for Wales has been notified, said a spokesman for Environment Agency Wales.

Investigations into the source of the pollution are continuing and water samples have been taken.

A spokesman added that this is the second fish kill in the last week which could affect fish populations in the Wye area.

They say both incidents are unconnected.

Fish deaths in river investigated
18 May 08 |  South East Wales
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27 Jun 08 |  South West Wales

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