Gudgeon · Gobio gobio

Gudgeon in the Main River Tone

Largest measured gudgeon: 16.3 cm

The largest gudgeon measured in Environment Agency surveys of the Main River Tone was 16.3 cm, recorded at Parsonage Farm (Te) on 4 August 2006.

Across 663 measured gudgeon, the median measured length was 11.6 cm.

Surveyors recorded weights for 187 gudgeon. The median was 0.8 oz (0.024 kg) and the largest recorded weight was 1.9 oz (0.055 kg).

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

See gudgeon records across England →

Most recent observation30 September 2025Roughmoor (Te) · 5 fish

Largest measured gudgeon: 16.3 cm
Median length: 11.6 cm
Fish measured: 663
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
16.3 cm	4 Aug 2006	Parsonage Farm (Te)	100819
15.8 cm	18 Oct 2022	Roughmoor (Te)	161675
15.6 cm	12 Sept 2024	Roughmoor (Te)	167016
15.6 cm	18 Oct 2022	Roughmoor (Te)	161675
15.5 cm	5 Sept 2023	Roughmoor (Te)	163211
15.5 cm	20 Aug 2019	Roughmoor (Te)	155183
15.5 cm	9 Oct 2003	Roughmoor (Te)	77560
15.3 cm	5 Sept 2023	Roughmoor (Te)	163211
15.2 cm	4 Aug 2006	Parsonage Farm (Te)	100819
15.2 cm	9 Oct 2003	Roughmoor (Te)	77560

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
Roughmoor (Te)	9 Oct 2003	30 Sept 2025	9
Bathpool	12 Sept 2006	19 Sept 2024	10
Newbridge	26 Apr 2007	25 Apr 2019	5
Priorswood (Te)	11 Sept 2003	7 Oct 2009	6
Parsonage Farm (Te)	4 Aug 2006	4 Aug 2006	1
Hornshay Farm at Nynehead (Se-03)	9 Sept 1994	9 Sept 1994	1

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

1994–2025

Survey records by year

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

194

095

096

097

098

099

000

001

002

203

204

205

406

307

008

309

210

111

012

113

114

115

016

117

018

319

020

021

122

123

224

125

Fish measured by surveyors

Measured length distribution

See how the 663 measured fish were spread across different length ranges.

Smallest: 3.2 cm
Lower quarter: 10.3 cm
Median: 11.6 cm
Upper quarter: 12.7 cm
Largest: 16.3 cm

0–99 mm

136

100–199 mm

527

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 187 gudgeon. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.004 kg)
Lower quarter: 0.7 oz (0.02 kg)
Median: 0.8 oz (0.024 kg)
Upper quarter: 1 oz (0.029 kg)
Heaviest: 1.9 oz (0.055 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Main River Tone

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

Brown / sea trout Bullhead European eel Stone loach Minnow Atlantic salmon

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 →