RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Desborough Island

Largest measured gudgeon: 13.8 cm

The largest gudgeon measured in Environment Agency surveys of the River Desborough Island was 13.8 cm, recorded at Desborough Island Downstream Fry on 3 September 2025.

Across 1,329 measured gudgeon, the median measured length was 6.1 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 Desborough Island.

See gudgeon records across England →

Most recent observation3 September 2025Desborough Island Upstream Fry · 48 fish
Largest measured gudgeon
13.8 cm
Median length
6.1 cm
Fish measured
1,329
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
13.8 cm3 Sept 2025Desborough Island Downstream Fry178515
13.7 cm23 Aug 2017Desborough Island Downstream Fry151497
13.3 cm23 Aug 2017Desborough Island Downstream Fry151497
13.3 cm20 Aug 2009Desborough Island Upstream Fry120816
13.1 cm3 Sept 2025Desborough Island Downstream Fry178515
13 cm28 Aug 2013Desborough Island Downstream Fry138572
13 cm20 Aug 2009Desborough Island Upstream Fry120816
12.9 cm3 Sept 2025Desborough Island Downstream Fry178515
12.9 cm23 Aug 2017Desborough Island Downstream Fry151497
12.9 cm21 Aug 2014Desborough Island Downstream Fry142446

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
Desborough Island Upstream Fry21 Aug 20083 Sept 202512
Desborough Island Downstream Fry22 Sept 20063 Sept 202516

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

2006–2025

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 1,329 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
4.2 cm
Median
6.1 cm
Upper quarter
10.2 cm
Largest
13.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Desborough Island

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

Roach Perch Dace Chub Bleak Ruffe

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 →