River Leen
20 fish species have been recorded at 12 locations along the River Leen.
- Fish species
- 20
- Places surveyed
- 12
- Survey visits
- 23
- Records span
- 1973–2026
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 |
|---|---|---|---|---|---|
| Stone loachBarbatula barbatula | 12 | 2026 | 658 | Median: 7.8 cm38 fish measuredLargest measured stone loach: 10.7 cm | — |
| BullheadCottus gobio | 11 | 2026 | 818 | Median: 6.1 cm25 fish measuredLargest measured bullhead: 10.2 cm | — |
| Brown / sea troutSalmo trutta | 9 | 2022 | 125 | Median: 20.3 cm100 fish measuredLargest measured brown / sea trout: 42.7 cm | — |
| ChubLeuciscus cephalus | 8 | 2026 | 106 | Median: 22.9 cm106 fish measuredLargest measured chub: 47.4 cm | — |
| GudgeonGobio gobio | 7 | 2022 | 56 | Median: 12 cm9 fish measuredLargest measured gudgeon: 15.3 cm | — |
| MinnowPhoxinus phoxinus | 7 | 2022 | 451 | Recorded length: 6.5 cm1 fish measuredView minnow measurement → | — |
| DaceLeuciscus leuciscus | 6 | 2022 | 159 | Median: 13.1 cm159 fish measuredLargest measured dace: 25.2 cm | — |
| PikeEsox lucius | 6 | 2022 | 96 | Median: 23.4 cm96 fish measuredLargest measured pike: 62 cm | — |
| Stickleback sp.Gasterosteidae | 6 | 1985 | 10 | — | — |
| PerchPerca fluviatilis | 4 | 2022 | 20 | Median: 15.1 cm20 fish measuredLargest measured perch: 24 cm | — |
| RoachRutilus rutilus | 4 | 2022 | 74 | Median: 10.5 cm74 fish measuredLargest measured roach: 23 cm | — |
| BarbelBarbus barbus | 4 | 2011 | 33 | Median: 42.4 cm33 fish measuredLargest measured barbel: 63.5 cm | — |
| Common carpCyprinus carpio | 3 | 2011 | 9 | Median: 39.8 cm9 fish measuredLargest measured common carp: 55.5 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 2 | 2026 | 313 | Median: 3.1 cm13 fish measuredLargest measured 3-spined stickleback: 6.6 cm | — |
| Common breamAbramis brama | 2 | 2011 | 4 | Median: 34.1 cm4 fish measuredLargest measured common bream: 35.8 cm | — |
| European eelAnguilla anguilla | 1 | 2022 | 6 | Median: 58 cm6 fish measuredLargest measured european eel: 87.5 cm | — |
| RuddScardinius erythrophthalmus | 1 | 1985 | 5 | Median: 20.9 cm5 fish measuredLargest measured rudd: 24.1 cm | — |
| Golden goldfishCarassius auratus | 1 | 1984 | 1 | Recorded length: 12.8 cm1 fish measured | — |
| Silver breamAbramis bjoerkna | 1 | 1995 | 1 | Recorded length: 14 cm1 fish measured | — |
| TenchTinca tinca | 1 | 2022 | 1 | Recorded length: 8.8 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 Leen. 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 →