River Wensum (Restoration strategy)
18 fish species have been recorded at 17 locations along the River Wensum (Restoration strategy).
- Fish species
- 18
- Places surveyed
- 17
- Survey visits
- 34
- Records span
- 1997–2025
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 |
|---|---|---|---|---|---|
| MinnowPhoxinus phoxinus | 16 | 2025 | 1,637 | Median: 5.3 cm1,459 fish measuredLargest measured minnow: 11.7 cm | — |
| BullheadCottus gobio | 16 | 2025 | 401 | Median: 6.6 cm401 fish measuredLargest measured bullhead: 10.5 cm | — |
| DaceLeuciscus leuciscus | 16 | 2024 | 371 | Median: 12.5 cm371 fish measuredLargest measured dace: 24.4 cm | — |
| Stone loachBarbatula barbatula | 15 | 2025 | 452 | Median: 8.6 cm452 fish measuredLargest measured stone loach: 12 cm | — |
| GudgeonGobio gobio | 15 | 2024 | 216 | Median: 10.5 cm216 fish measuredLargest measured gudgeon: 15.8 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 14 | 2025 | 66 | Median: 3.4 cm66 fish measuredLargest measured 3-spined stickleback: 8 cm | — |
| PikeEsox lucius | 13 | 2024 | 81 | Median: 34.2 cm81 fish measuredLargest measured pike: 94.2 cm | — |
| RoachRutilus rutilus | 13 | 2024 | 236 | Median: 12.4 cm236 fish measuredLargest measured roach: 25 cm | — |
| Brown / sea troutSalmo trutta | 12 | 2025 | 838 | Median: 18.9 cm838 fish measuredLargest measured brown / sea trout: 47 cm | — |
| European eelAnguilla anguilla | 10 | 2024 | 55 | Median: 55.7 cm36 fish measuredLargest measured european eel: 82 cm | Median: 12.2 oz (0.345 kg)12 fish weighedLargest measured: 1 lb 14 oz (0.85 kg) |
| ChubLeuciscus cephalus | 8 | 2024 | 488 | Median: 17.7 cm488 fish measuredLargest measured chub: 57.4 cm | — |
| Brook lampreyLampetra planeri | 7 | 2025 | 67 | Median: 13.2 cm67 fish measuredLargest measured brook lamprey: 17.8 cm | Median: 0.1 oz (0.003 kg)9 fish weighedLargest measured: 0.2 oz (0.005 kg) |
| PerchPerca fluviatilis | 6 | 2024 | 157 | Median: 13.3 cm157 fish measuredLargest measured perch: 27.8 cm | — |
| 10-spined sticklebackPungitius pungitius | 3 | 2025 | 8 | Median: 3.9 cm8 fish measuredLargest measured 10-spined stickleback: 4.7 cm | — |
| RuddScardinius erythrophthalmus | 3 | 2019 | 6 | Median: 6.6 cm6 fish measuredLargest measured rudd: 9.8 cm | — |
| BarbelBarbus barbus | 2 | 2024 | 3 | Median: 19 cm3 fish measuredLargest measured barbel: 19.3 cm | — |
| Common breamAbramis brama | 2 | 2024 | 10 | Median: 8.8 cm10 fish measuredLargest measured common bream: 10.7 cm | — |
| TenchTinca tinca | 2 | 2024 | 3 | Median: 20.1 cm3 fish measuredLargest measured tench: 34.1 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 Wensum (Restoration strategy). 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 →