River Dun
10 fish species have been recorded at 7 locations along the River Dun.
- Fish species
- 10
- Places surveyed
- 7
- Survey visits
- 16
- Records span
- 2004–2025
Local EA evidence
Where fish were recorded
Choose a point on the map to see what was recorded there.
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River conditions
Environment Agency evidence
Fish found in this river
Open a linked fish for detailed measurements, or use the map filter above to compare survey locations.
| Fish | Sites | Most recent | Fish counted | Measured length | Measured weight |
|---|---|---|---|---|---|
| Brown / sea troutSalmo trutta | 7 | 2025 | 368 | Median: 17.4 cm368 fish measuredLargest measured brown / sea trout: 39.5 cm | Median: 7.5 oz (0.214 kg)19 fish weighedLargest measured: 1 lb 8.2 oz (0.685 kg) |
| BullheadCottus gobio | 6 | 2025 | 949 | Median: 5.5 cm320 fish measuredLargest measured bullhead: 9 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 5 | 2025 | 53 | — | — |
| Brook lampreyLampetra planeri | 3 | 2025 | 25 | — | — |
| European eelAnguilla anguilla | 3 | 2025 | 7 | Median: 41 cm7 fish measuredLargest measured european eel: 63 cm | — |
| MinnowPhoxinus phoxinus | 3 | 2025 | 29 | — | — |
| Atlantic salmonSalmo salar | 2 | 2025 | 5 | Median: 10.4 cm5 fish measuredLargest measured atlantic salmon: 11.6 cm | — |
| Rainbow troutOncorhynchus mykiss | 1 | 2018 | 15 | Median: 42.9 cm6 fish measuredLargest measured rainbow trout: 43.5 cm | — |
| ChubLeuciscus cephalus | 1 | 2012 | 1 | Recorded length: 39.5 cm1 fish measured | — |
| GraylingThymallus thymallus | 1 | 2004 | 22 | Median: 27.1 cm22 fish measuredLargest measured grayling: 36.3 cm | Median: 7.4 oz (0.211 kg)22 fish weighedLargest measured: 15.4 oz (0.436 kg) |
EA surveys have recorded these fish at particular sites and times. Absence from a survey is not evidence that a species is absent from the river. Every valid individual length and weight is retained, with its sample size shown.
Useful context
This page follows survey locations along the main River Dun. Tributaries and unrelated rivers with similar names are kept separate.
The map shows past fish records, not fishing access or a promise of what you’ll catch today.
How RiverFish handles the data →