River Swale
21 fish species have been recorded at 37 locations along the River Swale.
- Fish species
- 21
- Places surveyed
- 37
- Survey visits
- 197
- Records span
- 1984–2026
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 |
|---|---|---|---|---|---|
| MinnowPhoxinus phoxinus | 31 | 2026 | 25,487 | Median: 2.8 cm4,390 fish measuredLargest measured minnow: 8.8 cm | — |
| ChubLeuciscus cephalus | 29 | 2025 | 5,627 | Median: 3.4 cm3,719 fish measuredLargest measured chub: 69.3 cm | — |
| BullheadCottus gobio | 29 | 2026 | 144 | Median: 5.2 cm114 fish measuredLargest measured bullhead: 7.9 cm | — |
| Stone loachBarbatula barbatula | 27 | 2026 | 546 | Median: 3.6 cm438 fish measuredLargest measured stone loach: 8.9 cm | — |
| DaceLeuciscus leuciscus | 25 | 2025 | 2,631 | Median: 5.2 cm2,046 fish measuredLargest measured dace: 40.8 cm | — |
| GraylingThymallus thymallus | 25 | 2026 | 1,018 | Median: 19.5 cm1,015 fish measuredLargest measured grayling: 40.8 cm | — |
| BarbelBarbus barbus | 19 | 2025 | 1,107 | Median: 7.1 cm871 fish measuredLargest measured barbel: 69.7 cm | Median: 3 lb 6.5 oz (1.55 kg)20 fish weighedLargest measured: 6 lb 9.1 oz (2.98 kg) |
| GudgeonGobio gobio | 19 | 2025 | 1,618 | Median: 7.3 cm987 fish measuredLargest measured gudgeon: 15.8 cm | — |
| Brown / sea troutSalmo trutta | 19 | 2025 | 980 | Median: 21.7 cm958 fish measuredLargest measured brown / sea trout: 46.7 cm | — |
| European eelAnguilla anguilla | 19 | 2022 | 5 | Median: 30 cm5 fish measuredLargest measured european eel: 45 cm | — |
| PikeEsox lucius | 18 | 2025 | 135 | Median: 50.9 cm135 fish measuredLargest measured pike: 96.2 cm | — |
| RoachRutilus rutilus | 16 | 2025 | 4,344 | Median: 3.6 cm1,616 fish measuredLargest measured roach: 35.9 cm | Recorded weight: 1 lb 7.7 oz (0.672 kg)1 fish weighed |
| PerchPerca fluviatilis | 12 | 2025 | 102 | Median: 14.6 cm101 fish measuredLargest measured perch: 37.5 cm | — |
| Atlantic salmonSalmo salar | 11 | 2026 | 88 | Median: 8.7 cm88 fish measuredLargest measured atlantic salmon: 76.6 cm | — |
| RuffeGymnocephalus cernuus | 10 | 2025 | 41 | Median: 6.2 cm25 fish measuredLargest measured ruffe: 14.2 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 6 | 2023 | 472 | Median: 2.9 cm306 fish measuredLargest measured 3-spined stickleback: 5.7 cm | — |
| BleakAlburnus alburnus | 5 | 2025 | 907 | Median: 3 cm580 fish measuredLargest measured bleak: 15.3 cm | — |
| River lampreyLampetra fluviatilis | 5 | 2005 | — | — | — |
| Common breamAbramis brama | 2 | 2002 | 28 | Median: 11.9 cm26 fish measuredLargest measured common bream: 15.6 cm | — |
| Rainbow troutOncorhynchus mykiss | 1 | 2003 | 5 | Median: 28.8 cm5 fish measuredLargest measured rainbow trout: 33.5 cm | — |
| Sea lampreyPetromyzon marinus | 1 | 2007 | — | — | — |
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 Swale. 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 →