RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Cliveden

Largest measured gudgeon: 13.7 cm

The largest gudgeon measured in Environment Agency surveys of the River Cliveden was 13.7 cm, recorded at Cliveden Downstream Fry on 29 August 2013.

Across 1,091 measured gudgeon, the median measured length was 5.3 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 Cliveden.

See gudgeon records across England →

Most recent observation4 September 2025Cliveden Upstream Fry · 4 fish
Largest measured gudgeon
13.7 cm
Median length
5.3 cm
Fish measured
1,091
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
13.7 cm29 Aug 2013Cliveden Downstream Fry138571
12.8 cm23 Aug 2011Cliveden Upstream Fry130059
12.5 cm17 Aug 2015Cliveden Downstream Fry146043
12.5 cm21 Aug 2014Cliveden Downstream Fry142441
12.5 cm29 Aug 2013Cliveden Downstream Fry138571
12.5 cm23 Aug 2011Cliveden Upstream Fry130059
12.3 cm17 Aug 2015Cliveden Downstream Fry146043
12.3 cm17 Aug 2015Cliveden Downstream Fry146043
12.3 cm23 Aug 2011Cliveden Upstream Fry130059
12.2 cm29 Aug 2013Cliveden Downstream Fry138571

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
Cliveden Upstream Fry7 Sept 20044 Sept 202514
Cliveden Downstream Fry7 Sept 20044 Sept 202515

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 1,091 measured fish were spread across different length ranges.

Smallest
1.4 cm
Lower quarter
3.3 cm
Median
5.3 cm
Upper quarter
9.2 cm
Largest
13.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Cliveden

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

Minnow Chub Roach Dace Perch Bleak

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 →