River Swarbourne
11 fish species have been recorded at 3 locations along the River Swarbourne.
- Fish species
- 11
- Places surveyed
- 3
- Survey visits
- 9
- Records span
- 1993–2023
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 | 3 | 2023 | 230 | Median: 19.5 cm230 fish measuredLargest measured brown / sea trout: 50.1 cm | — |
| European eelAnguilla anguilla | 3 | 1997 | 6 | Median: 43 cm6 fish measuredLargest measured european eel: 58.9 cm | — |
| RoachRutilus rutilus | 2 | 1997 | 67 | Median: 16.1 cm67 fish measuredLargest measured roach: 21.5 cm | — |
| PerchPerca fluviatilis | 2 | 2017 | 3 | Median: 22.8 cm3 fish measuredLargest measured perch: 30.8 cm | — |
| BullheadCottus gobio | 1 | 2023 | — | — | — |
| 3-spined sticklebackGasterosteus aculeatus | 1 | 2023 | — | — | — |
| Stone loachBarbatula barbatula | 1 | 2021 | — | — | — |
| ChubLeuciscus cephalus | 1 | 1997 | 28 | Median: 14.1 cm28 fish measuredLargest measured chub: 38 cm | — |
| Common breamAbramis brama | 1 | 1997 | 5 | Median: 24.8 cm5 fish measuredLargest measured common bream: 25.3 cm | — |
| DaceLeuciscus leuciscus | 1 | 1997 | 1 | Recorded length: 10.7 cm1 fish measured | — |
| TenchTinca tinca | 1 | 1993 | 1 | Recorded length: 32.9 cm1 fish measured | — |
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 Swarbourne. 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 →