River Allen (East & West)
5 fish species have been recorded at 34 locations along the River Allen (East & West).
- Fish species
- 5
- Places surveyed
- 34
- Survey visits
- 110
- Records span
- 1995–2025
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 | 33 | 2025 | 6,628 | Median: 9.5 cm4,129 fish measuredLargest measured brown / sea trout: 58.5 cm | Median: 1 oz (0.028 kg)290 fish weighedLargest measured: 3.3 oz (0.0925 kg) |
| Stone loachBarbatula barbatula | 14 | 2025 | 1,916 | Median: 8.6 cm76 fish measuredLargest measured stone loach: 10.7 cm | — |
| European eelAnguilla anguilla | 9 | 2025 | 112 | Median: 40 cm111 fish measuredLargest measured european eel: 70 cm | — |
| Atlantic salmonSalmo salar | 5 | 2025 | 3,840 | Median: 7 cm2,014 fish measuredLargest measured atlantic salmon: 16.6 cm | — |
| MinnowPhoxinus phoxinus | 5 | 2024 | 837 | Median: 7.2 cm3 fish measuredLargest measured minnow: 7.4 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 Allen (East & West). 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 →