Gudgeon · Gobio gobio

Gudgeon in the River Lymn FMU

Largest measured gudgeon: 16.4 cm

The largest gudgeon measured in Environment Agency surveys of the River Lymn FMU was 16.4 cm, recorded at Moat House Farm on 2 October 1987.

Across 3,106 measured gudgeon, the median measured length was 8.8 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 Lymn FMU.

See gudgeon records across England →

Most recent observation7 November 2025Mill Bridge · 147 fish

Largest measured gudgeon: 16.4 cm
Median length: 8.8 cm
Fish measured: 3,106
Survey locations: 4

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
16.4 cm	2 Oct 1987	Moat House Farm	58169
16 cm	30 Apr 2003	Partney Bridge	78667
15.7 cm	2 Apr 1996	Moat House Farm	58153
15.5 cm	2 Oct 1987	Moat House Farm	58169
15.4 cm	2 Apr 1996	Moat House Farm	58153
15.4 cm	1 Apr 1996	Partney Bridge	58152
15.2 cm	23 Apr 2007	Partney Bridge	105202
15.2 cm	1 Apr 1996	Partney Bridge	58152
15 cm	5 Mar 1993	Moat House Farm	58186
14.8 cm	5 Sept 2019	Partney Bridge	155829

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
Mill Bridge	29 Sept 1987	7 Nov 2025	13
Partney Bridge	6 Oct 1987	6 Jun 2024	8
Moat House Farm	2 Oct 1987	2 Apr 1996	3
Raithby Bridge	6 Oct 1987	1 Apr 1996	3

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

1987–2025

Survey records by year

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

487

088

089

090

091

092

493

094

095

496

097

098

099

000

001

102

203

104

105

106

107

008

009

010

011

212

013

014

015

016

017

018

219

020

021

122

023

224

125

Fish measured by surveyors

Measured length distribution

See how the 3,106 measured fish were spread across different length ranges.

Smallest: 3.9 cm
Lower quarter: 7.8 cm
Median: 8.8 cm
Upper quarter: 10 cm
Largest: 16.4 cm

0–99 mm

2311

100–199 mm

795

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Lymn FMU

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

Bullhead Brown / sea trout European eel 3-spined stickleback Roach Perch

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 →