Main River Mole
11 fish species have been recorded at 20 locations along the Main River Mole.
- Fish species
- 11
- Places surveyed
- 20
- Survey visits
- 86
- 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 |
|---|---|---|---|---|---|
| Brown / sea troutSalmo trutta | 20 | 2025 | 3,396 | Median: 12.4 cm1,496 fish measuredLargest measured brown / sea trout: 40 cm | Recorded weight: 2 lb 3.3 oz (1 kg)1 fish weighed |
| Atlantic salmonSalmo salar | 20 | 2025 | 3,854 | Median: 7.2 cm1,565 fish measuredLargest measured atlantic salmon: 63.5 cm | — |
| BullheadCottus gobio | 20 | 2025 | 2,083 | Median: 5.1 cm435 fish measuredLargest measured bullhead: 8.7 cm | Recorded weight: 1.8 oz (0.051 kg)1 fish weighed |
| European eelAnguilla anguilla | 16 | 2025 | 69 | Median: 23 cm69 fish measuredLargest measured european eel: 52 cm | — |
| Stone loachBarbatula barbatula | 14 | 2025 | 370 | Median: 7.8 cm129 fish measuredLargest measured stone loach: 11.8 cm | — |
| MinnowPhoxinus phoxinus | 12 | 2025 | 629 | Median: 4.9 cm204 fish measuredLargest measured minnow: 10.2 cm | — |
| Brook lampreyLampetra planeri | 1 | 2014 | 15 | Median: 11.5 cm3 fish measuredLargest measured brook lamprey: 12.5 cm | — |
| DaceLeuciscus leuciscus | 1 | 2023 | 1 | Recorded length: 7.3 cm1 fish measured | — |
| FlounderPlatichthys flesus | 1 | 2005 | — | — | — |
| Rainbow troutOncorhynchus mykiss | 1 | 1999 | — | — | — |
| RoachRutilus rutilus | 1 | 2007 | — | — | — |
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 Mole. 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 →