RiverFish

Grayling · Thymallus thymallus

Grayling in the River Goyt

Largest measured grayling: 35.4 cm

The largest grayling measured in Environment Agency surveys of the River Goyt was 35.4 cm, recorded at Gygo10 on 7 July 2004.

Across 272 measured grayling, the median measured length was 21 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 Goyt.

See grayling records across England →

Most recent observation10 September 2025Gygo25 · 1 fish
Largest measured grayling
35.4 cm
Median length
21 cm
Fish measured
272
Survey locations
17

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
35.4 cm7 Jul 2004Gygo1080826
34.9 cm2 Sept 2025Gygo05180055
34 cm3 Sept 2025Gygo13180072
34 cm11 Sept 2006Gygo10103318
33.8 cm29 Jul 2004Gygo2580831
33.6 cm12 Aug 2009Gygo10121081
33.5 cm29 Aug 2008Gygo10116201
33.4 cm29 Jul 2004Gygo1580827
33.3 cm7 Jul 2004Gygo1080826
33 cm8 Jul 2025Gygo06177311

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
Gygo2529 Jul 200410 Sept 20255
Gygo1715 Aug 200610 Sept 20254
Gygo2015 Sept 19984 Sept 20256
Gygo1614 Aug 20094 Sept 20253
Gygo143 Sept 20253 Sept 20251
Gygo133 Sept 20253 Sept 20251
Gygo072 Sept 20252 Sept 20251
Gygo052 Sept 20252 Sept 20251
Gygo0628 Sept 20228 Jul 20252
Gygo047 Aug 200719 Jun 20253
Gygo1024 Jun 200317 Jul 20137
Gygo306 Jul 200413 Aug 20093
GYGO20b13 Aug 200913 Aug 20091
Gygo1521 Aug 200211 Aug 20097
GYGO20a15 Aug 20065 Oct 20072
GYGO30a15 Aug 200615 Aug 20061
Gygo242 Sept 20022 Sept 20021

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

1998–2025

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 272 measured fish were spread across different length ranges.

Smallest
6.5 cm
Lower quarter
11.9 cm
Median
21 cm
Upper quarter
24.9 cm
Largest
35.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Goyt

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

Brown / sea trout Bullhead Stone loach 3-spined stickleback Perch Brook lamprey

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 →