Eau
17 fish species have been recorded at 3 locations along the Eau.
- Fish species
- 17
- Places surveyed
- 3
- Survey visits
- 13
- Records span
- 1996–2025
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 |
|---|---|---|---|---|---|
| European eelAnguilla anguilla | 3 | 2025 | 115 | Median: 32.4 cm103 fish measuredLargest measured european eel: 69 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 3 | 2025 | 308 | Median: 4.6 cm88 fish measuredLargest measured 3-spined stickleback: 6 cm | — |
| Stone loachBarbatula barbatula | 3 | 2025 | 355 | Median: 6.1 cm161 fish measuredLargest measured stone loach: 10.2 cm | — |
| PerchPerca fluviatilis | 3 | 2019 | 58 | Median: 10.6 cm57 fish measuredLargest measured perch: 24.1 cm | — |
| DaceLeuciscus leuciscus | 3 | 2025 | 127 | Median: 8.4 cm127 fish measuredLargest measured dace: 24.7 cm | — |
| GudgeonGobio gobio | 2 | 2025 | 672 | Median: 6.5 cm474 fish measuredLargest measured gudgeon: 15 cm | — |
| PikeEsox lucius | 2 | 2025 | 59 | Median: 7.8 cm59 fish measuredLargest measured pike: 83.8 cm | — |
| BullheadCottus gobio | 2 | 2025 | 382 | Median: 6.2 cm163 fish measuredLargest measured bullhead: 11.6 cm | — |
| RoachRutilus rutilus | 2 | 2025 | 394 | Median: 13.5 cm394 fish measuredLargest measured roach: 27.5 cm | — |
| FlounderPlatichthys flesus | 2 | 2017 | 9 | Median: 14.3 cm9 fish measuredLargest measured flounder: 32.3 cm | — |
| ChubLeuciscus cephalus | 1 | 2025 | 51 | Median: 12.4 cm51 fish measuredLargest measured chub: 40 cm | — |
| 10-spined sticklebackPungitius pungitius | 1 | 2025 | 6 | Median: 4.5 cm6 fish measuredLargest measured 10-spined stickleback: 4.9 cm | — |
| Spined loachCobitis taenia | 1 | 2025 | 14 | Median: 7.1 cm14 fish measuredLargest measured spined loach: 9 cm | — |
| MinnowPhoxinus phoxinus | 1 | 2011 | 1 | Recorded length: 6.9 cm1 fish measured | — |
| Common breamAbramis brama | 1 | 2006 | 2 | Median: 3.9 cm2 fish measuredLargest measured common bream: 4 cm | — |
| RuffeGymnocephalus cernuus | 1 | 2013 | 2 | Median: 7 cm2 fish measuredLargest measured ruffe: 9.3 cm | — |
| TenchTinca tinca | 1 | 1998 | 2 | Median: 18.7 cm2 fish measuredLargest measured tench: 19.8 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 Eau. 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 →