Gudgeon · Gobio gobio

Gudgeon in the Westleigh Brook

Largest measured gudgeon: 16.5 cm

The largest gudgeon measured in Environment Agency surveys of the Westleigh Brook was 16.5 cm, recorded at Glwe05 on 6 June 2022.

Across 78 measured gudgeon, the median measured length was 10.5 cm.

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

See gudgeon records across England →

Most recent observation24 April 2025Glwe05 · 18 fish

Largest measured gudgeon: 16.5 cm
Median length: 10.5 cm
Fish measured: 78
Survey locations: 2

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
16.5 cm	6 Jun 2022	Glwe05	161176
14.6 cm	1 Sept 2005	Glwe05	85997
13 cm	15 Jun 1999	Glwe05	61202
12.8 cm	6 Jun 2022	Glwe05	161176
12.5 cm	6 Jun 2022	Glwe05	161176
12.5 cm	15 Jun 1999	Glwe05	61202
12.4 cm	1 Sept 2005	Glwe05	85997
12.3 cm	6 Jun 2022	Glwe05	161176
12.1 cm	23 Apr 2025	We02	176630
12 cm	24 Apr 2025	Glwe05	177119

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
Glwe05	15 Jun 1999	24 Apr 2025	5
We02	23 Apr 2025	23 Apr 2025	1

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

1999–2025

Survey records by year

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

199

000

001

002

003

004

105

006

007

008

009

010

011

012

013

014

015

016

017

018

119

020

021

122

023

024

225

Fish measured by surveyors

Measured length distribution

See how the 78 measured fish were spread across different length ranges.

Smallest: 4.3 cm
Lower quarter: 9.7 cm
Median: 10.5 cm
Upper quarter: 11.5 cm
Largest: 16.5 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Westleigh Brook

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

European eel Chub Perch 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 →