RiverFish

Grayling · Thymallus thymallus

Grayling in the Costa Beck 2011 Project sites

Largest measured grayling: 41.1 cm

The largest grayling measured in Environment Agency surveys of the Costa Beck 2011 Project sites was 41.1 cm, recorded at Lower Section 4 on 4 October 2013.

Across 29 measured grayling, the median measured length was 12.2 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Costa Beck 2011 Project sites.

See grayling records across England →

Most recent observation4 October 2013Lower Section 4 · 3 fish
Largest measured grayling
41.1 cm
Median length
12.2 cm
Fish measured
29
Survey locations
5

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
41.1 cm4 Oct 2013Lower Section 4140233
33.3 cm4 Oct 2013Lower Section 4140233
33.1 cm20 Oct 2011Lower Section 1129609
33 cm2 Oct 2013Lower Middle (new) Section 4140242
28.8 cm20 Oct 2011Lower Section 1129609
25.5 cm20 Oct 2011Lower Section 3129611
21.5 cm20 Oct 2011Lower Section 1129609
20.9 cm20 Oct 2011Lower Section 3129611
14 cm20 Oct 2011Lower Section 3129611
13.4 cm20 Oct 2011Lower Section 4129612

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
Lower Section 420 Oct 20114 Oct 20132
Middle Section 43 Oct 20133 Oct 20131
Lower Middle (new) Section 42 Oct 20132 Oct 20131
Lower Section 320 Oct 201120 Oct 20111
Lower Section 120 Oct 201120 Oct 20111

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

2011–2013

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 29 measured fish were spread across different length ranges.

Smallest
6.2 cm
Lower quarter
11 cm
Median
12.2 cm
Upper quarter
20.9 cm
Largest
41.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Costa Beck 2011 Project sites

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

Brown / sea trout Rainbow trout Bullhead 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 →