River Menalhyl
7 fish species have been recorded at 12 locations along the River Menalhyl.
- Fish species
- 7
- Places surveyed
- 12
- Survey visits
- 22
- Records span
- 1986–2018
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 | 12 | 2018 | 2,538 | Median: 11.7 cm890 fish measuredLargest measured brown / sea trout: 25 cm | — |
| European eelAnguilla anguilla | 11 | 2018 | 61 | Median: 21 cm61 fish measuredLargest measured european eel: 49.5 cm | — |
| FlounderPlatichthys flesus | 5 | 2018 | 7 | Median: 13.5 cm7 fish measuredLargest measured flounder: 14.9 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 4 | 2018 | 7 | Median: 4.7 cm7 fish measuredLargest measured 3-spined stickleback: 6.1 cm | — |
| MinnowPhoxinus phoxinus | 4 | 2018 | 5 | Median: 6.1 cm5 fish measuredLargest measured minnow: 6.4 cm | — |
| Brook lampreyLampetra planeri | 3 | 2018 | 6 | Median: 10.5 cm6 fish measuredLargest measured brook lamprey: 13.1 cm | — |
| PikeEsox lucius | 1 | 2000 | 1 | Recorded length: 19.6 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 Menalhyl. 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 →