River Cookham - Boulters
19 fish species have been recorded at 3 locations along the River Cookham - Boulters.
- Fish species
- 19
- Places surveyed
- 3
- Survey visits
- 41
- Records span
- 1998–2025
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 |
|---|---|---|---|---|---|
| BleakAlburnus alburnus | 3 | 2025 | 1,938 | Median: 7.8 cm1,685 fish measuredLargest measured bleak: 14.5 cm | — |
| RoachRutilus rutilus | 3 | 2025 | 1,947 | Median: 11.6 cm1,697 fish measuredLargest measured roach: 29 cm | — |
| PerchPerca fluviatilis | 3 | 2025 | 244 | Median: 14.6 cm222 fish measuredLargest measured perch: 33 cm | — |
| PikeEsox lucius | 3 | 2025 | 119 | Median: 56.7 cm98 fish measuredLargest measured pike: 87.2 cm | — |
| European eelAnguilla anguilla | 3 | 2023 | 120 | Median: 68.5 cm95 fish measuredLargest measured european eel: 92.6 cm | — |
| DaceLeuciscus leuciscus | 3 | 2023 | 157 | Median: 11 cm149 fish measuredLargest measured dace: 23 cm | — |
| ChubLeuciscus cephalus | 3 | 2025 | 77 | Median: 16 cm71 fish measuredLargest measured chub: 52.4 cm | — |
| GudgeonGobio gobio | 3 | 2023 | 128 | Median: 10.1 cm96 fish measuredLargest measured gudgeon: 13.2 cm | — |
| Common breamAbramis brama | 3 | 2018 | 57 | Median: 8.8 cm12 fish measuredLargest measured common bream: 57.9 cm | — |
| TenchTinca tinca | 2 | 2025 | 17 | Median: 25.5 cm15 fish measuredLargest measured tench: 45 cm | — |
| MinnowPhoxinus phoxinus | 2 | 2022 | 1 | — | — |
| BarbelBarbus barbus | 2 | 2011 | 5 | Median: 58.8 cm5 fish measuredLargest measured barbel: 66.1 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 1 | 2010 | — | — | — |
| Brown / sea troutSalmo trutta | 1 | 2008 | 1 | Recorded length: 9.6 cm1 fish measured | — |
| BullheadCottus gobio | 1 | 2002 | — | — | — |
| Common carpCyprinus carpio | 1 | 2007 | 1 | Recorded length: 55 cm1 fish measured | — |
| RuddScardinius erythrophthalmus | 1 | 2016 | 1 | Recorded length: 14.9 cm1 fish measured | — |
| RuffeGymnocephalus cernuus | 1 | 2007 | 1 | Recorded length: 9.6 cm1 fish measured | — |
| Stone loachBarbatula barbatula | 1 | 2008 | — | — | — |
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 Cookham - Boulters. 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 →