RiverFish

Grayling · Thymallus thymallus

Grayling in the River Main Inny

Largest measured grayling: 34.7 cm

The largest grayling measured in Environment Agency surveys of the River Main Inny was 34.7 cm, recorded at St. Clether on 20 August 2015.

Across 27 measured grayling, the median measured length was 5.7 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Main Inny.

See grayling records across England →

Most recent observation26 August 2021Bealsmill · 1 fish
Largest measured grayling
34.7 cm
Median length
5.7 cm
Fish measured
27
Survey locations
13

Individual EA measurements

Largest measured grayling

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
34.7 cm20 Aug 2015St. Clether146033
32.2 cm4 Jun 2009Bealsmill117367
31.5 cm6 Aug 2004Treguddick81420
21.4 cm26 Aug 2021Bealsmill160439
18.2 cm28 Jul 2021Larrick160436
10.3 cm10 Aug 2011Bealsmill127495
7.5 cm24 Jun 2021Treguddick Mill160433
6.9 cm28 Jul 2021Larrick160436
6.4 cm28 Jul 2021Larrick160436
6.3 cm23 Jun 2015Trewen145149

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where grayling were found

Each point marks a survey location with at least one grayling record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyedFirst recordedLast recordedVisits finding grayling
Bealsmill18 Jul 199026 Aug 20215
Larrick5 Jun 200928 Jul 20212
Treguddick Mill16 Jun 201024 Jun 20216
St. Clether6 Jul 198420 Aug 20153
Trewen6 Jul 198423 Jun 20154
u/s Laneast Bridge5 Jul 198417 Jun 20092
Knightsmill29 Jun 198410 Jun 20092
Treguddick3 Jul 19846 Aug 20045
Hicks Mill3 Jul 19842 Jul 19963
Trecarrell1 Jul 19961 Jul 19961
Killabury1 Jul 19961 Jul 19961
Inny Foot7 Aug 199027 Jun 19962
Treglasta27 Jul 198427 Jul 19841

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

1984–2021

Survey records by year

Each bar shows how many survey visits recorded grayling that year.

Fish measured by surveyors

Measured length distribution

See how the 27 measured fish were spread across different length ranges.

Smallest
4.3 cm
Lower quarter
5.1 cm
Median
5.7 cm
Upper quarter
7.2 cm
Largest
34.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Inny

Compare other species with enough survey and measurement data for a detailed page.

Atlantic salmon Brown / sea trout Bullhead Stone loach European eel Minnow

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →