River Main Inny

8 fish species have been recorded at 19 locations along the River Main Inny.

Records updated10 August 2026Most recent survey: 2025
Fish species
8
Places surveyed
19
Survey visits
119
Records span
1984–2025

Local EA evidence

Where fish were recorded

19 of 19 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
Atlantic salmonSalmo salar19202516,294Median: 6.9 cm2,529 fish measuredLargest measured atlantic salmon: 19.2 cm—
Brown / sea troutSalmo trutta1920255,801Median: 9 cm2,667 fish measuredLargest measured brown / sea trout: 50.5 cm—
BullheadCottus gobio1920253,342Median: 5 cm2,712 fish measuredLargest measured bullhead: 10.7 cm—
Stone loachBarbatula barbatula182025188Median: 7.5 cm188 fish measuredLargest measured stone loach: 12.6 cm—
European eelAnguilla anguilla172025423Median: 27 cm423 fish measuredLargest measured european eel: 65 cm—
MinnowPhoxinus phoxinus162025978Median: 5.9 cm727 fish measuredLargest measured minnow: 8.8 cm—
GraylingThymallus thymallus13202127Median: 5.7 cm27 fish measuredLargest measured grayling: 34.7 cm—
Brook lampreyLampetra planeri122025282Median: 10.6 cm282 fish measuredLargest measured brook lamprey: 17 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 Main Inny. 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 →