Grayling · Thymallus thymallus

Grayling in the River Rye

Largest measured grayling: 41.7 cm

The largest grayling measured in Environment Agency surveys of the River Rye was 41.7 cm, recorded at R.Rye at Duncombe park on 26 June 2006.

Across 307 measured grayling, the median measured length was 10 cm.

Surveyors recorded weights for 3 grayling. The median was 0.1 oz (0.002 kg) and the largest recorded weight was 0.1 oz (0.003 kg).

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.

See grayling records across England →

Most recent observation20 August 2025R.Rye at Nunnington · 39 fish

Largest measured grayling: 41.7 cm
Median length: 10 cm
Fish measured: 307
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.

Length	Survey date	Survey location	Survey ID
41.7 cm	26 Jun 2006	R.Rye at Duncombe park	102546
40.6 cm	26 Jun 2006	R.Rye at Duncombe park	102546
37.9 cm	23 Aug 2012	R.Rye at Shaken bdg	133114
36.3 cm	22 Jun 2006	R.Rye at Low ground Fm	102371
33.8 cm	3 Sept 2024	R.Rye at Butterwick	167263
33.8 cm	5 Jul 2006	R.Rye at Nunnington	102373
32 cm	20 Sept 2005	R.Rye at Howe Bridge DERCORS1	87889
31.5 cm	20 Sept 2005	R.Rye at Howe Bridge DERCORS1	87889
30.1 cm	30 Aug 2018	R.Rye at Nunnington	153287
29.9 cm	15 Aug 2024	R.Rye at Nunnington	166312

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 surveyed	First recorded	Last recorded	Visits finding grayling
R.Rye at Nunnington	17 Sept 1997	20 Aug 2025	10
R.Rye at Butterwick	17 Sept 1997	3 Sept 2024	4
R.Rye at Shaken bdg	23 Aug 2012	23 Aug 2012	1
R.Rye at Duncombe park	26 Jun 2006	26 Jun 2006	1
R.Rye at Low ground Fm	22 Jun 2006	22 Jun 2006	1
R.Rye at Helmsley	22 Jun 2006	22 Jun 2006	1
R.Rye at Howe Bridge DERCORS1	25 Sept 2001	20 Sept 2005	5

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

1997–2025

Survey records by year

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

297

098

099

000

101

102

103

104

105

506

107

008

009

010

011

312

013

014

015

016

017

118

019

020

121

122

123

224

125

Fish measured by surveyors

Measured length distribution

See how the 307 measured fish were spread across different length ranges.

Smallest: 5.6 cm
Lower quarter: 8.9 cm
Median: 10 cm
Upper quarter: 18.4 cm
Largest: 41.7 cm

0–99 mm

153

100–199 mm

200–299 mm

300–399 mm

400–499 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 3 grayling. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.1 oz (0.0015 kg)
Median: 0.1 oz (0.002 kg)
Upper quarter: 0.1 oz (0.0025 kg)
Heaviest: 0.1 oz (0.003 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Rye

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

Bullhead Brown / sea trout Stone loach Rainbow trout Minnow 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 →