Bourn Brook
11 fish species have been recorded at 3 locations along the Bourn Brook.
- Fish species
- 11
- Places surveyed
- 3
- Survey visits
- 17
- Records span
- 1991–2025
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 |
|---|---|---|---|---|---|
| PikeEsox lucius | 3 | 2013 | 115 | Median: 39.3 cm109 fish measuredLargest measured pike: 74.8 cm | — |
| BullheadCottus gobio | 3 | 2025 | 101 | Median: 5.6 cm69 fish measuredLargest measured bullhead: 9.3 cm | — |
| RoachRutilus rutilus | 3 | 2013 | 127 | Median: 11.8 cm117 fish measuredLargest measured roach: 32.8 cm | — |
| DaceLeuciscus leuciscus | 3 | 2025 | 68 | Median: 8.3 cm61 fish measuredLargest measured dace: 26.3 cm | — |
| PerchPerca fluviatilis | 3 | 2013 | 55 | Median: 13.3 cm51 fish measuredLargest measured perch: 27.3 cm | — |
| MinnowPhoxinus phoxinus | 2 | 2025 | 255 | Median: 5.6 cm111 fish measuredLargest measured minnow: 8.3 cm | — |
| ChubLeuciscus cephalus | 2 | 2005 | 111 | Median: 31.6 cm110 fish measuredLargest measured chub: 48.8 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 2 | 2013 | 11 | Median: 4.5 cm10 fish measuredLargest measured 3-spined stickleback: 5 cm | — |
| Stone loachBarbatula barbatula | 1 | 2019 | 23 | Median: 10 cm4 fish measuredLargest measured stone loach: 10.6 cm | — |
| GudgeonGobio gobio | 1 | 1993 | 38 | Median: 8.3 cm38 fish measuredLargest measured gudgeon: 9.8 cm | — |
| European eelAnguilla anguilla | 1 | 1991 | 1 | — | — |
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 Bourn Brook. 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 →