RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Main Somerset Frome

Largest measured gudgeon: 19.7 cm

The largest gudgeon measured in Environment Agency surveys of the River Main Somerset Frome was 19.7 cm, recorded at Creamery (Te) on 3 October 2007.

Across 1,862 measured gudgeon, the median measured length was 9.7 cm.

Surveyors recorded weights for 880 gudgeon. The median was 0.5 oz (0.014 kg) and the largest recorded weight was 2 oz (0.058 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 Somerset Frome.

See gudgeon records across England →

Most recent observation22 September 2025Tellisford, Depleted Reach · 15 fish
Largest measured gudgeon
19.7 cm
Median length
9.7 cm
Fish measured
1,862
Survey locations
9

Individual EA measurements

Largest measured gudgeon

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
19.7 cm3 Oct 2007Creamery (Te)107318
17.6 cm25 Oct 2007Snarlton Farm (Te)107860
16.7 cm16 May 2006Tellisford (Te06)90810
16.4 cm3 Oct 2007Creamery (Te)107318
16 cm25 Sept 2007Tellisford (Te06)106871
15.8 cm18 Aug 2010Tellisford (Te06)123490
15.6 cm3 Oct 2007Creamery (Te)107318
15.6 cm16 May 2006Tellisford (Te06)90810
15.4 cm18 Aug 2010Tellisford (Te06)123490
15.4 cm25 Sept 2007Tellisford (Te06)106871

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 surveyedFirst recordedLast recordedVisits finding gudgeon
Tellisford, Depleted Reach16 May 200622 Sept 20254
Tellisford (Te06)3 Oct 200129 Aug 20197
Creamery (Te)4 Sept 200328 Aug 20198
Downstream Scutts Bridge (Te)27 Aug 200331 Jul 20197
Blatchbridge (Te)26 Aug 200324 Jul 20199
Snarlton Farm (Te)21 Aug 200323 Jul 20199
Welshmill27 Jul 20165 Oct 20172
Vernal Lodge27 Jul 20162 Aug 20172
Bull's Bridge23 Oct 200723 Oct 20071

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.

Fish measured by surveyors

Measured length distribution

See how the 1,862 measured fish were spread across different length ranges.

Smallest
2.4 cm
Lower quarter
8.3 cm
Median
9.7 cm
Upper quarter
11.5 cm
Largest
19.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 880 gudgeon. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.3 oz (0.008 kg)
Median
0.5 oz (0.014 kg)
Upper quarter
0.7 oz (0.021 kg)
Heaviest
2 oz (0.058 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 Somerset Frome

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

Minnow Stone loach Roach Bullhead 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 →