Main River Coly
8 fish species have been recorded at 9 locations along the Main River Coly.
- Fish species
- 8
- Places surveyed
- 9
- Survey visits
- 47
- 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 |
|---|---|---|---|---|---|
| Brown / sea troutSalmo trutta | 9 | 2025 | 1,161 | Median: 14.6 cm515 fish measuredLargest measured brown / sea trout: 33 cm | — |
| BullheadCottus gobio | 9 | 2025 | 2,142 | Median: 5.4 cm449 fish measuredLargest measured bullhead: 9 cm | — |
| Stone loachBarbatula barbatula | 9 | 2025 | 431 | Median: 8.1 cm161 fish measuredLargest measured stone loach: 12.9 cm | — |
| European eelAnguilla anguilla | 8 | 2025 | 347 | Median: 16 cm329 fish measuredLargest measured european eel: 55 cm | — |
| MinnowPhoxinus phoxinus | 8 | 2025 | 1,221 | Median: 6 cm366 fish measuredLargest measured minnow: 10.5 cm | — |
| Atlantic salmonSalmo salar | 4 | 2023 | 133 | Median: 12.4 cm49 fish measuredLargest measured atlantic salmon: 19.9 cm | — |
| FlounderPlatichthys flesus | 1 | 2023 | 1 | Recorded length: 13 cm1 fish measured | — |
| 3-spined sticklebackGasterosteus aculeatus | 1 | 2021 | 1 | Recorded length: 5.5 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 Main River Coly. 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 →