RiverFish

Grayling · Thymallus thymallus

Grayling in the River Main Lyd

Largest measured grayling: 35.4 cm

The largest grayling measured in Environment Agency surveys of the River Main Lyd was 35.4 cm, recorded at Sydenham on 20 June 2013.

Across 55 measured grayling, the median measured length was 8.5 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 Lyd.

See grayling records across England →

Most recent observation7 July 2025u/s Gatherley · 2 fish
Largest measured grayling
35.4 cm
Median length
8.5 cm
Fish measured
55
Survey locations
7

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
35.4 cm20 Jun 2013Sydenham136763
11 cm28 Jul 2022u/s Gatherley161788
10.9 cm7 Aug 2019u/s Gatherley155554
10.4 cm28 Jul 2022u/s Gatherley161788
10.4 cm7 Aug 2015u/s Gatherley145797
10.3 cm7 Jul 2025u/s Gatherley177578
10.3 cm23 Aug 2013u/s Gatherley138121
10.2 cm28 Jul 2022u/s Gatherley161788
10.2 cm7 Aug 2019u/s Gatherley155554
10.2 cm7 Aug 2015u/s Gatherley145797

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
u/s Gatherley26 Aug 19937 Jul 202513
Lifton Playing Field21 Jun 199611 Jul 20246
Spry Farm15 Aug 198412 Aug 20194
Sydenham14 Aug 198426 Jun 20199
Lifton Park19 Jun 19961 Oct 20155
Lyd Confluence9 Aug 199411 Aug 20102
Sydenham upper gravel retention24 Jun 199624 Jun 19961

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

1984–2025

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 55 measured fish were spread across different length ranges.

Smallest
4.4 cm
Lower quarter
7.2 cm
Median
8.5 cm
Upper quarter
9.8 cm
Largest
35.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Lyd

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

Atlantic salmon Brown / sea trout Bullhead European eel Stone loach Brook lamprey

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 →