RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Len

Largest measured gudgeon: 15.8 cm

The largest gudgeon measured in Environment Agency surveys of the River Len was 15.8 cm, recorded at Fulling Mill on 12 August 2010.

Across 288 measured gudgeon, the median measured length was 9.8 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 Len.

See gudgeon records across England →

Most recent observation24 July 2023Turkey Mill · 31 fish
Largest measured gudgeon
15.8 cm
Median length
9.8 cm
Fish measured
288
Survey locations
6

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
15.8 cm12 Aug 2010Fulling Mill123372
15.3 cm12 Aug 2010Fulling Mill123372
14.8 cm8 Oct 2009Leeds Castle Upstream120336
14.6 cm8 Oct 2009Leeds Castle Upstream120336
14.5 cm16 Aug 2004Fulling Mill82993
14.3 cm1 Sept 2017Thurnham Mill151521
14.3 cm16 Aug 2004Fulling Mill82993
14.1 cm16 Aug 2004Fulling Mill82993
14 cm16 Aug 2004Fulling Mill82993
14 cm16 Aug 2004Fulling Mill82993

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
Turkey Mill2 Aug 200424 Jul 20234
Fulling Mill16 Aug 200412 Jul 20235
Thurnham Mill1 Sept 20171 Sept 20171
Leeds Castle Upstream8 Oct 20098 Oct 20091
Leeds Castle 18 Oct 20098 Oct 20091
Caring Lane2 Oct 20092 Oct 20091

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

2004–2023

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 288 measured fish were spread across different length ranges.

Smallest
2.9 cm
Lower quarter
8.5 cm
Median
9.8 cm
Upper quarter
11.4 cm
Largest
15.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Len

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

European eel Perch Pike Roach Common bream Bullhead

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 →