Gudgeon · Gobio gobio

Gudgeon in the River Swilgate

Largest measured gudgeon: 16 cm

The largest gudgeon measured in Environment Agency surveys of the River Swilgate was 16 cm, recorded at D/s of weir (tidal) on 15 August 2003.

Across 263 measured gudgeon, the median measured length was 10.9 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 Swilgate.

See gudgeon records across England →

Most recent observation23 August 2024Rails Meadow · 7 fish

Largest measured gudgeon: 16 cm
Median length: 10.9 cm
Fish measured: 263
Survey locations: 6

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 cm	15 Aug 2003	D/s of weir (tidal)	76720
15.9 cm	14 May 2009	Elmstone Hardwicke	117224
15.9 cm	21 Oct 1998	Tredington	72970
15.5 cm	12 Sept 2018	Rails Meadow	153374
15.5 cm	20 Jan 1976	Tredington	76590
15.2 cm	21 Oct 1998	Tredington	72970
15 cm	18 May 1992	Tredington	72972
15 cm	20 Jan 1976	Tredington	76590
15 cm	20 Jan 1976	Tredington	76590
14.8 cm	14 May 2009	Elmstone Hardwicke	117224

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
Rails Meadow	10 Oct 2013	23 Aug 2024	6
Prior's Park	8 Sept 2016	8 Sept 2016	1
D/s of weir (tidal)	15 Aug 2003	8 Aug 2014	5
Tredington	20 Jan 1976	7 May 2014	6
Elmstone Hardwicke	21 Oct 1998	14 May 2009	3
Gander Lane	20 Jan 1976	15 Nov 1987	2

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

1976–2024

Survey records by year

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

276

077

078

079

080

081

082

083

084

085

086

287

088

089

090

091

192

093

094

095

096

097

298

099

000

001

002

203

104

205

006

007

008

109

010

011

112

113

214

015

216

017

118

019

020

121

122

023

124

Fish measured by surveyors

Measured length distribution

See how the 263 measured fish were spread across different length ranges.

Smallest: 3 cm
Lower quarter: 9.5 cm
Median: 10.9 cm
Upper quarter: 12.2 cm
Largest: 16 cm

0–99 mm

100–199 mm

185

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Swilgate

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

Dace European eel Stone loach Roach 3-spined stickleback Chub

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 →