RiverFish

Grayling · Thymallus thymallus

Grayling in the River Rother

Largest measured grayling: 35 cm

The largest grayling measured in Environment Agency surveys of the River Rother was 35 cm, recorded at .Rother Valley Country Park, d/s weir on 28 July 2025.

Across 24 measured grayling, the median measured length was 20.4 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 Rother.

See grayling records across England →

Most recent observation29 July 2025Whitting confluence · 15 fish
Largest measured grayling
35 cm
Median length
20.4 cm
Fish measured
24
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
35 cm28 Jul 2025.Rother Valley Country Park, d/s weir177632
32.8 cm28 Jul 2025.Rother Valley Country Park, d/s weir177632
32.1 cm29 Jul 2025Whitting confluence177633
23.2 cm10 Jul 2017Whitting confluence150868
22.8 cm29 Jul 2025Whitting confluence177633
22.5 cm29 Jul 2025Whitting confluence177633
22.5 cm29 Jul 2025Whitting confluence177633
22.3 cm29 Jul 2025Whitting confluence177633
21.4 cm10 Jul 2017Whitting confluence150868
21 cm29 Jul 2025Whitting confluence177633

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
Whitting confluence5 Jul 201629 Jul 20253
.Rother Valley Country Park, d/s weir28 Jul 202528 Jul 20251
Downstream Orgreave weir28 Aug 201928 Aug 20191

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

2016–2025

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 24 measured fish were spread across different length ranges.

Smallest
6 cm
Lower quarter
7.4 cm
Median
20.4 cm
Upper quarter
22.5 cm
Largest
35 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Rother

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

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

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 →