RiverFish

Grayling · Thymallus thymallus

Grayling in the River Dearne

Largest measured grayling: 34.2 cm

The largest grayling measured in Environment Agency surveys of the River Dearne was 34.2 cm, recorded at Stairfoot on 20 June 2016.

Across 37 measured grayling, the median measured length was 24 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 Dearne.

See grayling records across England →

Most recent observation17 June 2026Stairfoot · 4 fish
Largest measured grayling
34.2 cm
Median length
24 cm
Fish measured
37
Survey locations
3

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
34.2 cm20 Jun 2016Stairfoot148272
32 cm18 Jun 2025Stairfoot176953
31.6 cm17 Jun 2026Stairfoot181796
29.8 cm24 Jun 2019Stairfoot154896
28.1 cm17 Jun 2015Stairfoot145157
28 cm17 Jun 2024Stairfoot165211
28 cm17 Jun 2024Stairfoot165211
27.5 cm17 Jun 2026Stairfoot181796
27.5 cm17 Jun 2024Stairfoot165211
27.5 cm17 Jun 2024Stairfoot165211

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
Stairfoot19 Jun 201417 Jun 20269
Darton Scout Clubhouse6 Aug 20256 Aug 20251
Baraugh Bridge17 Jun 200920 Jun 20112

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

2009–2026

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 37 measured fish were spread across different length ranges.

Smallest
10.1 cm
Lower quarter
20.4 cm
Median
24 cm
Upper quarter
27.5 cm
Largest
34.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Dearne

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

3-spined stickleback Gudgeon Brown / sea trout Chub Roach 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 →