River Lymn FMU
23 fish species have been recorded at 7 locations along the River Lymn FMU.
- Fish species
- 23
- Places surveyed
- 7
- Survey visits
- 49
- Records span
- 1987–2025
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 |
|---|---|---|---|---|---|
| BullheadCottus gobio | 7 | 2024 | 624 | Median: 6.1 cm624 fish measuredLargest measured bullhead: 11.4 cm | — |
| Brown / sea troutSalmo trutta | 6 | 2024 | 826 | Median: 16.9 cm735 fish measuredLargest measured brown / sea trout: 38 cm | — |
| European eelAnguilla anguilla | 6 | 2025 | 1,464 | Median: 30 cm173 fish measuredLargest measured european eel: 59.5 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 6 | 2015 | 48 | Median: 4.7 cm48 fish measuredLargest measured 3-spined stickleback: 6.1 cm | — |
| RoachRutilus rutilus | 5 | 2025 | 3,036 | Median: 9.8 cm3,036 fish measuredLargest measured roach: 25.6 cm | — |
| PerchPerca fluviatilis | 5 | 2025 | 298 | Median: 10.2 cm298 fish measuredLargest measured perch: 35.5 cm | — |
| Brook lampreyLampetra planeri | 5 | 2025 | 57 | Median: 15.6 cm25 fish measuredLargest measured brook lamprey: 19.5 cm | — |
| DaceLeuciscus leuciscus | 4 | 2025 | 2,922 | Median: 11.4 cm2,922 fish measuredLargest measured dace: 25 cm | — |
| GudgeonGobio gobio | 4 | 2025 | 4,149 | Median: 8.8 cm3,106 fish measuredLargest measured gudgeon: 16.4 cm | — |
| Stone loachBarbatula barbatula | 4 | 2024 | 332 | Median: 8.1 cm332 fish measuredLargest measured stone loach: 15.4 cm | — |
| PikeEsox lucius | 3 | 2025 | 42 | Median: 28.3 cm42 fish measuredLargest measured pike: 58.5 cm | — |
| BleakAlburnus alburnus | 3 | 2025 | 194 | Median: 11 cm194 fish measuredLargest measured bleak: 18 cm | — |
| ChubLeuciscus cephalus | 2 | 2024 | 137 | Median: 24.7 cm137 fish measuredLargest measured chub: 48 cm | — |
| River lampreyLampetra fluviatilis | 2 | 2004 | 14 | Median: 18.5 cm13 fish measuredLargest measured river lamprey: 33.4 cm | Median: 1.7 oz (0.0475 kg)6 fish weighedLargest measured: 7.1 oz (0.2 kg) |
| Spined loachCobitis taenia | 1 | 2006 | 37 | Median: 7.4 cm37 fish measuredLargest measured spined loach: 12.1 cm | — |
| RuffeGymnocephalus cernuus | 1 | 2025 | 33 | Median: 9.1 cm33 fish measuredLargest measured ruffe: 13.5 cm | — |
| Silver breamAbramis bjoerkna | 1 | 2024 | 296 | Median: 7.4 cm296 fish measuredLargest measured silver bream: 19.1 cm | — |
| MinnowPhoxinus phoxinus | 1 | 2016 | 1 | Recorded length: 4.8 cm1 fish measured | — |
| Rainbow troutOncorhynchus mykiss | 1 | 1993 | 6 | Median: 32.7 cm6 fish measuredLargest measured rainbow trout: 54.6 cm | — |
| Brook troutSalvelinus fontinalis | 1 | 1987 | 4 | Median: 18.4 cm4 fish measuredLargest measured brook trout: 25.1 cm | — |
| Common breamAbramis brama | 1 | 2024 | 3 | Median: 10 cm3 fish measuredLargest measured common bream: 10.5 cm | — |
| RuddScardinius erythrophthalmus | 1 | 2024 | 1 | Recorded length: 8.1 cm1 fish measured | — |
| TenchTinca tinca | 1 | 2024 | 2 | Median: 8.8 cm2 fish measuredLargest measured tench: 8.8 cm | — |
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 Lymn FMU. 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 →