RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Dun

Largest measured gudgeon: 18.6 cm

The largest gudgeon measured in Environment Agency surveys of the River Dun was 18.6 cm, recorded at Oakhill Farm - Eel on 15 October 2024.

Across 18 measured gudgeon, the median measured length was 12.2 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 Dun.

See gudgeon records across England →

Most recent observation16 October 2025Oakhill Farm - Eel · 4 fish
Largest measured gudgeon
18.6 cm
Median length
12.2 cm
Fish measured
18
Survey locations
4

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
18.6 cm15 Oct 2024Oakhill Farm - Eel167932
15.6 cm17 Oct 2023Beat 9 - Eel164400
13.5 cm26 Aug 2010Freemans Marsh- DS gauging weir125275
13.4 cm16 Oct 2025Oakhill Farm - Eel179916
13.4 cm16 Oct 2025Oakhill Farm - Eel179916
13.4 cm26 Aug 2010Freemans Marsh- DS gauging weir125275
13.1 cm16 Oct 2025Oakhill Farm - Eel179916
12.5 cm20 Mar 2025Freemans Marsh176030
12.2 cm15 Oct 2024Oakhill Farm - Eel167932
12.2 cm26 Aug 2010Freemans Marsh- DS gauging weir125275

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
Oakhill Farm - Eel15 Oct 202416 Oct 20252
Freemans Marsh20 Mar 202520 Mar 20251
Beat 9 - Eel17 Oct 202317 Oct 20231
Freemans Marsh- DS gauging weir26 Aug 201026 Aug 20101

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

2010–2025

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 18 measured fish were spread across different length ranges.

Smallest
10.1 cm
Lower quarter
11.1 cm
Median
12.2 cm
Upper quarter
13.4 cm
Largest
18.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Dun

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

Brown / sea trout Bullhead Grayling Dace Pike Roach

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 →