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Non-Natives Species Information


The capture of Wels catfish from the river at Hamsey were first reported to OAPS during the 2009/2010 coarse fishing season. Since then, permit holders have caught and removed catfish up to weights more than 10lbs.It is illegal under the Wildlife and Countryside Act 1981 to return catfish to a river. 

Anglers are required to either kill any non-native species they catch or, preferably, contact the EA who will collect and remove them for relocation.

Telephone numbers for the EA are either 0800 80 70 60 (Emergency Hotline) or 01903 703886 (during office hours only for the local EA Fisheries, Recreation and Biodiversity Team).


The following is a list of fish and other non-native species, taken from schedule 9 of the Wildlife and Countryside Act, that anglers might come into contact with and which should not be returned to the river if captured – those known to be, or have been, present in the Sussex Ouse are shown as bold green and are underlined. Click on any of the names for further information…



The European Pond Terrapin should not be confused with the North American Red Eared Terrapin which HAS been seen in the Sussex Ouse. Although the Red Eared Terrapin is an ‘undesirable’ species in the river, it is not on the list of non-native species contained within the Wildlife and Countryside Act.

The Society’s rule requiring all coarse fish to be returned to the river dead OR alive

does not, of course, apply to non-native species.

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