Electrofishing is a type of monitoring which uses electricity to temporarily cause fish to swim towards an operator in order to catch them. After the survey, the fish are released back in to the water unharmed. The use of semi-quantitative electrofishing can indicate the size and age structure of fish populations and allow us to evaluate habitat conditions.
We use backpack electrofishing equipment to assess juvenile fish stocks in shallow reaches of rivers. We record the number, size and species of the fish we catch. Water quality and habitat conditions are also logged and the data we collect is made available to our partners and the public.
Volunteers help us carry out our electrofishing programme every summer.