RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Great Ouse

Largest measured gudgeon: 12.1 cm

The largest gudgeon measured in Environment Agency surveys of the River Great Ouse was 12.1 cm, recorded at DS Brownshill Staunch on 23 March 2026.

Across 12 measured gudgeon, the median measured length was 10.7 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 Great Ouse.

See gudgeon records across England →

Most recent observation16 April 2026DS Brownshill Staunch · 5 fish
Largest measured gudgeon
12.1 cm
Median length
10.7 cm
Fish measured
12
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
12.1 cm23 Mar 2026DS Brownshill Staunch180791
12 cm23 Mar 2026DS Brownshill Staunch180791
11.8 cm23 Mar 2026DS Brownshill Staunch180791
11.7 cm23 Mar 2026DS Brownshill Staunch180791
11.6 cm23 Mar 2026DS Brownshill Staunch180791
11.3 cm16 Apr 2026DS Brownshill Staunch180999
10.1 cm16 Apr 2026DS Brownshill Staunch180999
9.7 cm23 Mar 2026DS Brownshill Staunch180791
8.6 cm23 Mar 2026DS Brownshill Staunch180791
8.4 cm16 Apr 2026DS Brownshill Staunch180999

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
DS Brownshill Staunch23 Mar 202616 Apr 20262
US Brownshill Staunch28 Oct 200826 Nov 20083

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

2008–2026

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 12 measured fish were spread across different length ranges.

Smallest
7.8 cm
Lower quarter
8.6 cm
Median
10.7 cm
Upper quarter
11.7 cm
Largest
12.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Great Ouse

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

Perch European eel Roach Ruffe Pike

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 →