RiverFish

Gudgeon · Gobio gobio

Gudgeon in the Chalgrove Brook

Largest measured gudgeon: 12.8 cm

The largest gudgeon measured in Environment Agency surveys of the Chalgrove Brook was 12.8 cm, recorded at School Lane on 8 July 2016.

Across 39 measured gudgeon, the median measured length was 9.5 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Chalgrove Brook.

See gudgeon records across England →

Most recent observation29 October 2025South of Oxford Way · 1 fish
Largest measured gudgeon
12.8 cm
Median length
9.5 cm
Fish measured
39
Survey locations
5

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
12.8 cm8 Jul 2016School Lane148469
12.2 cm8 Jul 2016School Lane148469
11.6 cm2 Oct 2025Stadhampton Mill179131
11.4 cm2 Oct 2025Stadhampton Mill179131
11.1 cm2 Oct 2025Stadhampton Mill179131
11.1 cm2 Oct 2025Stadhampton Mill179131
11 cm2 Oct 2025Stadhampton Mill179131
10.9 cm2 Oct 2025School Lane179132
10.9 cm2 Oct 2025Stadhampton Mill179131
10.8 cm2 Oct 2025Stadhampton Mill179131

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
South of Oxford Way29 Oct 202529 Oct 20251
Stadhampton Mill2 Oct 20252 Oct 20251
School Lane8 Jun 20112 Oct 20253
Downstream Bridge at Stadhampton2 Oct 20192 Oct 20191
Chiselhampton2 Oct 20192 Oct 20191

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

2011–2025

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 39 measured fish were spread across different length ranges.

Smallest
6.5 cm
Lower quarter
8.4 cm
Median
9.5 cm
Upper quarter
10.7 cm
Largest
12.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Chalgrove Brook

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

Brown / sea trout Dace Chub

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 →