Gudgeon · Gobio gobio

Gudgeon in the Hey Brook

Largest measured gudgeon: 13 cm

The largest gudgeon measured in Environment Agency surveys of the Hey Brook was 13 cm, recorded at Glhe10 on 8 April 2005.

Across 77 measured gudgeon, the median measured length was 7.5 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Hey Brook.

See gudgeon records across England →

Most recent observation27 May 2026Glhe05 · 59 fish

Largest measured gudgeon: 13 cm
Median length: 7.5 cm
Fish measured: 77
Survey locations: 3

Individual EA measurements

Largest measured gudgeon

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
13 cm	8 Apr 2005	Glhe10	84372
12 cm	9 Jun 1999	He03	61123
11.6 cm	8 Apr 2005	Glhe10	84372
11.5 cm	27 May 2026	Glhe05	181639
11.5 cm	8 Apr 2005	Glhe05	84371
11.1 cm	8 Apr 2005	Glhe10	84372
11 cm	9 Jun 1999	He03	61123
11 cm	9 Jun 1999	He03	61123
10.8 cm	27 May 2026	Glhe05	181639
10.8 cm	9 Jun 1999	Glhe10	61122

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where gudgeon were found

Each point marks a survey location with at least one gudgeon 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 gudgeon
Glhe05	8 Apr 2005	27 May 2026	2
Glhe10	9 Jun 1999	8 Apr 2005	2
He03	9 Jun 1999	9 Jun 1999	1

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

1999–2026

Survey records by year

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

299

000

001

002

003

004

205

006

007

008

009

010

011

012

013

014

015

016

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019

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021

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025

126

Fish measured by surveyors

Measured length distribution

See how the 77 measured fish were spread across different length ranges.

Smallest: 3.1 cm
Lower quarter: 4.4 cm
Median: 7.5 cm
Upper quarter: 9.9 cm
Largest: 13 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Hey Brook

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

Roach

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 →