River Gwash
21 fish species have been recorded at 19 locations along the River Gwash.
- Fish species
- 21
- Places surveyed
- 19
- Survey visits
- 97
- Records span
- 1990–2023
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 | 17 | 2023 | 6,442 | Median: 20.8 cm6,299 fish measuredLargest measured brown / sea trout: 48 cm | Median: 6.3 oz (0.18 kg)5 fish weighedLargest measured: 9.1 oz (0.258 kg) |
| European eelAnguilla anguilla | 17 | 2023 | 2,000 | Median: 40.1 cm609 fish measuredLargest measured european eel: 74 cm | Median: 4.2 oz (0.12 kg)3 fish weighedLargest measured: 13.7 oz (0.388 kg) |
| BullheadCottus gobio | 16 | 2023 | 267 | Median: 6.5 cm187 fish measuredLargest measured bullhead: 11 cm | — |
| GraylingThymallus thymallus | 12 | 2023 | 491 | Median: 21.6 cm491 fish measuredLargest measured grayling: 55.6 cm | — |
| DaceLeuciscus leuciscus | 12 | 2023 | 1,015 | Median: 20.9 cm1,015 fish measuredLargest measured dace: 29.6 cm | — |
| RoachRutilus rutilus | 10 | 2023 | 204 | Median: 17 cm204 fish measuredLargest measured roach: 32.5 cm | — |
| PerchPerca fluviatilis | 8 | 2017 | 23 | Median: 18.6 cm23 fish measuredLargest measured perch: 27.2 cm | — |
| Common breamAbramis brama | 8 | 1996 | 48 | Median: 33 cm48 fish measuredLargest measured common bream: 41.5 cm | — |
| ChubLeuciscus cephalus | 7 | 2023 | 108 | Median: 22 cm108 fish measuredLargest measured chub: 43.5 cm | — |
| Brook lampreyLampetra planeri | 6 | 2015 | 1 | — | — |
| MinnowPhoxinus phoxinus | 5 | 2023 | 17 | Median: 7 cm17 fish measuredLargest measured minnow: 9.5 cm | — |
| Rainbow troutOncorhynchus mykiss | 5 | 2023 | 27 | Median: 22.7 cm27 fish measuredLargest measured rainbow trout: 41.2 cm | — |
| PikeEsox lucius | 5 | 2023 | 15 | Median: 58.4 cm15 fish measuredLargest measured pike: 79.5 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 4 | 2023 | 3 | Median: 3.5 cm3 fish measuredLargest measured 3-spined stickleback: 3.5 cm | — |
| Stone loachBarbatula barbatula | 4 | 2018 | 1 | Recorded length: 6 cm1 fish measuredView stone loach measurement → | — |
| 10-spined sticklebackPungitius pungitius | 3 | 2015 | — | — | — |
| GudgeonGobio gobio | 2 | 1996 | 2 | Median: 14 cm2 fish measuredLargest measured gudgeon: 14 cm | — |
| River lampreyLampetra fluviatilis | 2 | 1996 | 3 | — | — |
| RuddScardinius erythrophthalmus | 2 | 2018 | 2 | Median: 13.9 cm2 fish measuredLargest measured rudd: 14.6 cm | — |
| TenchTinca tinca | 2 | 2015 | 2 | Median: 18.1 cm2 fish measuredLargest measured tench: 23.8 cm | — |
| Common carpCyprinus carpio | 1 | 1993 | 1 | Recorded length: 21 cm1 fish measured | — |
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 Gwash. 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 →