Gudgeon · Gobio gobio

Gudgeon in the River Itchen

Largest measured gudgeon: 15.3 cm

The largest gudgeon measured in Environment Agency surveys of the River Itchen was 15.3 cm, recorded at Long Itchington on 23 August 2016.

Across 212 measured gudgeon, the median measured length was 10 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 Itchen.

See gudgeon records across England →

Most recent observation17 May 2023Long Itchington · 33 fish

Largest measured gudgeon: 15.3 cm
Median length: 10 cm
Fish measured: 212
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
15.3 cm	23 Aug 2016	Long Itchington	149395
14.7 cm	23 Sept 2008	Snowford Bridge	115061
14 cm	17 May 2023	Long Itchington	162379
13.5 cm	23 Aug 2016	Long Itchington	149395
13.4 cm	23 Aug 2016	Long Itchington	149395
13 cm	8 May 2018	Long Itchington	152618
12.9 cm	23 Aug 2016	Long Itchington	149395
12.9 cm	23 Aug 2016	Long Itchington	149395
12.8 cm	17 May 2023	Long Itchington	162379
12.8 cm	23 Aug 2016	Long Itchington	149395

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
Long Itchington	6 Nov 1986	17 May 2023	7
Long Itchington upstream site	13 Oct 2010	13 Oct 2010	1
Snowford Bridge	29 Jun 1993	23 Sept 2008	3

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

1986–2023

Survey records by year

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

186

087

088

089

090

091

192

193

094

095

096

297

098

099

000

001

002

003

004

005

006

007

108

009

110

011

012

013

014

015

116

017

118

119

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 212 measured fish were spread across different length ranges.

Smallest: 3.7 cm
Lower quarter: 8.5 cm
Median: 10 cm
Upper quarter: 11.5 cm
Largest: 15.3 cm

0–99 mm

103

100–199 mm

109

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Itchen

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

Pike Stone loach Bullhead Minnow Dace 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 →