River Mardle

4 fish species have been recorded at 3 locations along the River Mardle.

Records updated10 August 2026Most recent survey: 2024
Fish species
4
Places surveyed
3
Survey visits
12
Records span
1996–2024

Local EA evidence

Where fish were recorded

3 of 3 places shown

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.

FishSitesMost recentFish countedMeasured lengthMeasured weight
Brown / sea troutSalmo trutta32024470Median: 9.5 cm297 fish measuredLargest measured brown / sea trout: 29.8 cm—
BullheadCottus gobio32024177Median: 5.9 cm13 fish measuredLargest measured bullhead: 7.7 cm—
Atlantic salmonSalmo salar3201464Median: 11.4 cm11 fish measuredLargest measured atlantic salmon: 12.5 cm—
European eelAnguilla anguilla320214Median: 30 cm3 fish measuredLargest measured european eel: 32.5 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 River Mardle. 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 →