RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Boveney

Largest measured gudgeon: 14.7 cm

The largest gudgeon measured in Environment Agency surveys of the River Boveney was 14.7 cm, recorded at Boveney Downstream Fry on 20 August 2008.

Across 2,134 measured gudgeon, the median measured length was 5.5 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 Boveney.

See gudgeon records across England →

Most recent observation4 September 2025Boveney Upstream Fry · 3 fish
Largest measured gudgeon
14.7 cm
Median length
5.5 cm
Fish measured
2,134
Survey locations
2

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
14.7 cm20 Aug 2008Boveney Downstream Fry125629
14.1 cm1 Sept 2006Boveney Downstream Fry111839
13.8 cm1 Sept 2006Boveney Downstream Fry111839
13.1 cm1 Sept 2006Boveney Downstream Fry111839
13 cm20 Aug 2008Boveney Downstream Fry125629
12.9 cm1 Sept 2006Boveney Downstream Fry111839
12.9 cm1 Sept 2006Boveney Downstream Fry111839
12.7 cm1 Sept 2006Boveney Downstream Fry111839
12.4 cm20 Aug 2008Boveney Downstream Fry125629
12.3 cm18 Aug 2010Boveney Downstream Fry124508

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
Boveney Upstream Fry8 Sept 20044 Sept 202516
Boveney Downstream Fry8 Sept 20044 Sept 202518

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

2004–2025

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 2,134 measured fish were spread across different length ranges.

Smallest
1.4 cm
Lower quarter
4.2 cm
Median
5.5 cm
Upper quarter
9.6 cm
Largest
14.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Boveney

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

Chub Dace Roach Bleak Minnow 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 →