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Publication - Research and analysis

National Electrofishing Programme for Scotland (NEPS) 2023: status of juvenile Atlantic salmon and brown trout populations

Published
11 June 2025
From
Cabinet Secretary for Rural Affairs, Land Reform and Islands, +2 more … Director of Marine, Director-General Net Zero
Directorate
Marine Directorate
Topic
Environment and climate change, Farming and rural, Marine and fisheries
ISBN
9781836916116

The National Electrofishing Programme for Scotland (NEPS) is a statistical survey of freshwater fish populations and the pressures affecting them in Scotland, particularly water quality and genetic introgression. This report presents the latest analysis including data from 2023.

View supporting documents Supporting documents

Appendix 3

Inter-annual variability in mean density of salmon and trout fry, parr and the combination of lifestages between NEPS surveys. Data from NEPS 2021 and 2023 were post-stratified to harmonise between years and allow comparison for common regions and sample frames. Strata are geographically ordered from south west to south east. Lower confidence limits are capped at 0.005.

Mean salmon fry densities (with uncertainty) for each NEPS Region in each year
Mean salmon parr densities (with uncertainty) for each NEPS Region in each year
Mean trout fry densities (with uncertainty) for each NEPS Region in each year
Mean trout parr densities (with uncertainty) for each NEPS Region in each year

Contact

Email: neps@gov.scot

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