Grayling · Thymallus thymallus

Grayling in the River Dever

Largest measured grayling: 39 cm

The largest grayling measured in Environment Agency surveys of the River Dever was 39 cm, recorded at Bullington Church on 19 July 2012.

Across 84 measured grayling, the median measured length was 7.2 cm.

Surveyors recorded weights for 17 grayling. The median was 4.3 oz (0.122 kg) and the largest recorded weight was 11.9 oz (0.337 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 Dever.

See grayling records across England →

Most recent observation19 July 2012Bullington Church · 14 fish

Largest measured grayling: 39 cm
Median length: 7.2 cm
Fish measured: 84
Survey locations: 4

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
39 cm	19 Jul 2012	Bullington Church	132382
37.2 cm	19 Jul 2012	Bullington Church	132382
37 cm	19 Jul 2012	Bullington Church	132382
35.5 cm	19 Jul 2012	Bullington Church	132382
34.4 cm	19 Jul 2012	Bullington Church	132382
34.3 cm	19 Jul 2012	Bullington Church	132382
33.2 cm	19 Jul 2012	Bullington Church	132382
32 cm	19 Jul 2012	Bullington Church	132382
31.4 cm	19 Jul 2012	Bullington Church	132382
31.1 cm	30 Jun 2004	Bransbury	80347

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
Bullington Church	19 Jul 2012	19 Jul 2012	1
Bransbury	30 Jun 2004	17 Jul 2012	2
Egypt	8 Jul 2004	30 Aug 2011	2
Dever Springs	28 Sept 2004	28 Sept 2004	1

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

2004–2012

Survey records by year

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

304

005

006

007

008

009

010

111

212

Fish measured by surveyors

Measured length distribution

See how the 84 measured fish were spread across different length ranges.

Smallest: 5.3 cm
Lower quarter: 6.7 cm
Median: 7.2 cm
Upper quarter: 22.2 cm
Largest: 39 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 17 grayling. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.5 oz (0.013 kg)
Lower quarter: 0.7 oz (0.021 kg)
Median: 4.3 oz (0.122 kg)
Upper quarter: 4.9 oz (0.139 kg)
Heaviest: 11.9 oz (0.337 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 Dever

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

Brown / sea trout 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 →