The Tweed Foundation

The Tweed Foundation 

for the good of the river


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The Tweed Biosecurity Plan describes the biosecurity issues of the Tweed and Eye catchments and presents actions for the prevention, early detection, control and mitigation of the introduction and spread of selected non-native species (NNS), fish diseases and parasites. Non-native species (NNS) are defined as animals and plants that have been moved outside of their natural range by human action, whether intentional or not. This definition is consistent with the Wildlife and Environment (Scotland) Act (2011). A list of aquatic and riparian species, derived from both the Water Framework Directive UK Technical Advisory Group’s "high impact species" list and from the concerns of local stakeholders is presented in Section 4 of this plan - it also includes marine species that can impact the coastal zone. This species list is not fixed and can be expanded as required.
Keep Gyrodactylus salaris out of Tweed

The aim of the plan is to develop a practical framework to:

  • prevent
  • detect - Please tell us if you spot an unusual species.
  • control
  • eradicate - last resort for specified non-native species within the Tweed catchment through coordinated data collection, management, liaison, and education.



Tweed Biosecurity Plan

Code of practice for non-native species

River Tweed Commission policy for the introduction of fish species to the Tweed District



Copyright The Tweed Foundation
A Charitable Company registered in Scotland No. SC366380        Registered Charity No. SC011055