RiverFish

Grayling · Thymallus thymallus

Grayling in the River Etherow

Largest measured grayling: 28.2 cm

The largest grayling measured in Environment Agency surveys of the River Etherow was 28.2 cm, recorded at Etet20 on 8 April 2003.

Across 29 measured grayling, the median measured length was 20.7 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 Etherow.

See grayling records across England →

Most recent observation11 June 2025Etet30 · 6 fish
Largest measured grayling
28.2 cm
Median length
20.7 cm
Fish measured
29
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
28.2 cm8 Apr 2003Etet2075801
27.3 cm10 Apr 2003Etet3075815
26 cm15 Apr 2004Etet3079578
25.7 cm9 May 2013Etet20137549
25.5 cm8 Apr 2003Etet2075801
25 cm8 Apr 2003Etet2075801
24.9 cm9 May 2013Etet20137549
24.5 cm8 Apr 2003Etet2075801
24.4 cm15 Apr 2004Etet3079578
24.3 cm10 Apr 2003Etet3075815

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
Etet3010 Apr 200311 Jun 20254
Etet2510 Apr 200329 Sept 20222
Etet208 Apr 20039 May 20132

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

2003–2025

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 29 measured fish were spread across different length ranges.

Smallest
4.9 cm
Lower quarter
17 cm
Median
20.7 cm
Upper quarter
24.5 cm
Largest
28.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Etherow

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

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

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 →