RiverFish

Grayling · Thymallus thymallus

Grayling in the River Rye salmon riffles

Largest measured grayling: 32.4 cm

The largest grayling measured in Environment Agency surveys of the River Rye salmon riffles was 32.4 cm, recorded at Riffle at Ness Hall on 26 September 2016.

Across 307 measured grayling, the median measured length was 11.3 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 Rye salmon riffles.

See grayling records across England →

Most recent observation20 August 2025Riffle at Ness Cottages powerlines · 4 fish
Largest measured grayling
32.4 cm
Median length
11.3 cm
Fish measured
307
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
32.4 cm26 Sept 2016Riffle at Ness Hall149675
31.2 cm5 Sept 2012Riffle at Ness Cottages powerlines140177
26.8 cm24 Aug 2023Riffle at Ness Cottages powerlines163056
26 cm24 Aug 2023Riffle at Ness Cottages powerlines163056
25.8 cm5 Sept 2012Riffle at Ness Cottages powerlines140177
25.5 cm26 Sept 2016Riffle at Ness Hall149675
24.8 cm26 Sept 2016Riffle at Ness Hall149675
23.9 cm5 Sept 2012Riffle at Ness Cottages powerlines140177
23.3 cm3 Oct 2016Riffle downstream Nunnington Br site149694
21.5 cm26 Sept 2016Riffle at Ness Hall149675

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
Riffle at Ness Cottages powerlines5 Sept 201220 Aug 20257
Riffle downstream Nunnington Br site5 Sept 20123 Oct 20162
Hollins Wood3 Oct 20163 Oct 20161
Harome Sidings3 Oct 20163 Oct 20161
Duncombe Park (Riffle at fish rescue stock point)3 Oct 20163 Oct 20161
Duncombe Park (Riffle US fish rescue stock point)3 Oct 20163 Oct 20161
Low Waterholmes - DS footbridge2 Oct 20162 Oct 20161
Low Waterholmes2 Oct 20162 Oct 20161
Riffle at Ness Hall5 Sept 201226 Sept 20162
Riffle at Low Moor Seat26 Sept 201626 Sept 20161
Riffle Downstream Ness Rd Br5 Sept 201226 Sept 20162
Riffle DS Ness Cottages car park26 Sept 201626 Sept 20161
Low Moor Seat - Oxbow26 Sept 201626 Sept 20161

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

2012–2025

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 307 measured fish were spread across different length ranges.

Smallest
5.8 cm
Lower quarter
10.2 cm
Median
11.3 cm
Upper quarter
12.9 cm
Largest
32.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Rye salmon riffles

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

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

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 →