Gudgeon · Gobio gobio

Gudgeon in the River Main Bristol Frome

Largest measured gudgeon: 19 cm

The largest gudgeon measured in Environment Agency surveys of the River Main Bristol Frome was 19 cm, recorded at Eastville Park (Te) on 6 July 2022.

Across 645 measured gudgeon, the median measured length was 11.5 cm.

Surveyors recorded weights for 249 gudgeon. The median was 0.6 oz (0.018 kg) and the largest recorded weight was 6 oz (0.17 kg).

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

See gudgeon records across England →

Most recent observation4 July 2023Eastville Park (Te) · 25 fish

Largest measured gudgeon: 19 cm
Median length: 11.5 cm
Fish measured: 645
Survey locations: 10

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 cm	6 Jul 2022	Eastville Park (Te)	161204
16.3 cm	3 Aug 2010	Eastville Park (Te)	123291
16.1 cm	15 Jul 2014	Eastville Park (Te)	141707
15.8 cm	15 Jul 2014	Eastville Park (Te)	141707
15.5 cm	27 Aug 1998	Eastville Park (Te)	77192
15.1 cm	29 Aug 2007	Watley's End	108672
15 cm	3 Jul 2019	Eastville Park (Te)	154713
15 cm	13 Jul 2011	Eastville Park (Te)	127116
15 cm	3 Aug 2010	Eastville Park (Te)	123291
15 cm	20 Jul 2005	Eastville Park (Te)	85199

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
Eastville Park (Te)	27 Aug 1998	4 Jul 2023	17
Damsons Bridge (Te)	20 Aug 1998	26 Jul 2022	7
Oldbury Court	21 Aug 2007	5 Jul 2022	2
Nibley (Se-03)	27 Jul 2021	27 Jul 2021	1
Meadowmead	9 Aug 2012	9 Aug 2012	1
Frenchay, Flock Mill (Te)	29 May 2003	3 Aug 2010	6
Watley's End	29 Aug 2007	29 Aug 2007	1
Frenchay, Chapel Lane	8 May 2002	8 May 2002	1
Upstream Cleeve Mill	16 Sept 1998	16 Sept 1998	1
Frampton Cotterell	21 Jul 1998	21 Jul 1998	1

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

1998–2023

Survey records by year

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

498

099

000

001

202

303

304

305

306

407

108

109

210

111

212

113

114

015

116

017

018

119

020

121

322

123

Fish measured by surveyors

Measured length distribution

See how the 645 measured fish were spread across different length ranges.

Smallest: 5.5 cm
Lower quarter: 10 cm
Median: 11.5 cm
Upper quarter: 12.7 cm
Largest: 19 cm

0–99 mm

147

100–199 mm

498

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 249 gudgeon. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.4 oz (0.012 kg)
Median: 0.6 oz (0.018 kg)
Upper quarter: 0.9 oz (0.026 kg)
Heaviest: 6 oz (0.17 kg)

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

More fish in this river

Explore the River Main Bristol Frome

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

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

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 →