Gudgeon · Gobio gobio

Gudgeon in the River Avon (Hampshire)

Largest measured gudgeon: 19.5 cm

The largest gudgeon measured in Environment Agency surveys of the River Avon (Hampshire) was 19.5 cm, recorded at The Moot on 5 August 2014.

Across 267 measured gudgeon, the median measured length was 12.4 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 Avon (Hampshire).

See gudgeon records across England →

Most recent observation2 October 2025Kings Stream Upstream Bridge · 18 fish

Largest measured gudgeon: 19.5 cm
Median length: 12.4 cm
Fish measured: 267
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
19.5 cm	5 Aug 2014	The Moot	143732
17 cm	13 Oct 2004	King's Stream	82786
15.8 cm	12 Oct 2022	The Moot	162023
15.4 cm	11 Oct 2005	King's Stream	86779
15.2 cm	12 Oct 2022	The Moot	162023
15.1 cm	12 Oct 2022	The Moot	162023
15 cm	12 Oct 2022	The Moot	162023
14.9 cm	5 Aug 2014	The Moot	143732
14.8 cm	12 Oct 2022	The Moot	162023
14.8 cm	12 Oct 2022	The Moot	162023

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
Kings Stream Upstream Bridge	10 Sept 2019	2 Oct 2025	2
The Moot	3 Jul 2003	12 Oct 2022	4
King's Stream	3 Sept 2001	9 Sept 2015	12

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

2001–2025

Survey records by year

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

101

002

203

104

105

106

107

108

109

210

111

012

113

114

115

016

017

018

119

020

021

122

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 267 measured fish were spread across different length ranges.

Smallest: 6.5 cm
Lower quarter: 11.2 cm
Median: 12.4 cm
Upper quarter: 13.2 cm
Largest: 19.5 cm

0–99 mm

100–199 mm

236

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Avon (Hampshire)

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

Brown / sea trout European eel Atlantic salmon Chub Dace Pike

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 →