Gudgeon · Gobio gobio

Gudgeon in the Bourne

Largest measured gudgeon: 12.1 cm

The largest gudgeon measured in Environment Agency surveys of the Bourne was 12.1 cm, recorded at Pierce Mill on 8 August 2002.

Across 82 measured gudgeon, the median measured length was 7.5 cm.

Surveyors recorded weights for 3 gudgeon. The median was 0.6 oz (0.018 kg) and the largest recorded weight was 0.6 oz (0.018 kg).

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

See gudgeon records across England →

Most recent observation7 August 2023Pierce Mill · 47 fish

Largest measured gudgeon: 12.1 cm
Median length: 7.5 cm
Fish measured: 82
Survey locations: 1

Individual EA measurements

Largest measured gudgeon

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
12.1 cm	8 Aug 2002	Pierce Mill	66861
11.3 cm	8 Aug 2002	Pierce Mill	66861
10.7 cm	2 Aug 2017	Pierce Mill	151554
9.9 cm	19 Aug 2010	Pierce Mill	123504
9.6 cm	2 Aug 2017	Pierce Mill	151554
9.5 cm	7 Aug 2023	Pierce Mill	163080
9.5 cm	19 Aug 2010	Pierce Mill	123504
9.4 cm	2 Aug 2017	Pierce Mill	151554
9.3 cm	2 Aug 2017	Pierce Mill	151554
9.2 cm	2 Aug 2017	Pierce Mill	151554

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 surveyed	First recorded	Last recorded	Visits finding gudgeon
Pierce Mill	8 Aug 2002	7 Aug 2023	5

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

2002–2023

Survey records by year

Each bar shows how many survey visits recorded gudgeon that year.

102

003

004

005

006

007

008

009

110

111

012

013

014

015

016

117

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 82 measured fish were spread across different length ranges.

Smallest: 4.2 cm
Lower quarter: 5.4 cm
Median: 7.5 cm
Upper quarter: 8.4 cm
Largest: 12.1 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 3 gudgeon. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.004 kg)
Lower quarter: 0.4 oz (0.011 kg)
Median: 0.6 oz (0.018 kg)
Upper quarter: 0.6 oz (0.018 kg)
Heaviest: 0.6 oz (0.018 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Bourne

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

Brown / sea trout Chub Minnow Stone loach 3-spined stickleback Pike

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 →