Gudgeon · Gobio gobio

Gudgeon in the Boldings Brook

Largest measured gudgeon: 12.2 cm

The largest gudgeon measured in Environment Agency surveys of the Boldings Brook was 12.2 cm, recorded at Downstream Farthing Bridge sq on 4 August 2005.

Across 93 measured gudgeon, the median measured length was 8.4 cm.

Surveyors recorded weights for 69 gudgeon. The median was 0.2 oz (0.006 kg) and the largest recorded weight was 0.9 oz (0.025 kg).

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

See gudgeon records across England →

Most recent observation25 June 2024Upstream Farthing Bridge · 11 fish

Largest measured gudgeon: 12.2 cm
Median length: 8.4 cm
Fish measured: 93
Survey locations: 3

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
12.2 cm	4 Aug 2005	Downstream Farthing Bridge sq	87067
12 cm	4 Aug 2005	Downstream Farthing Bridge sq	87067
11.9 cm	4 Aug 2005	Downstream Farthing Bridge sq	87067
11.4 cm	10 May 2013	Upstream Farthing Bridge	135987
11.4 cm	10 May 2013	Upstream Farthing Bridge	135987
11.2 cm	25 Jun 2024	Upstream Farthing Bridge	165452
11.2 cm	25 Jul 2016	Upstream Farthing Bridge	148667
11.1 cm	25 Jun 2024	Upstream Farthing Bridge	165452
11.1 cm	25 Jul 2016	Upstream Farthing Bridge	148667
11 cm	25 Jul 2016	Redford Avenue	148668

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
Upstream Farthing Bridge	10 May 2013	25 Jun 2024	3
Redford Avenue	25 Jul 2016	25 Jul 2016	1
Downstream Farthing Bridge sq	4 Aug 2005	4 Aug 2005	1

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

2005–2024

Survey records by year

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

105

006

007

008

009

010

011

012

113

014

015

216

017

018

019

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 93 measured fish were spread across different length ranges.

Smallest: 3.6 cm
Lower quarter: 6.7 cm
Median: 8.4 cm
Upper quarter: 9.8 cm
Largest: 12.2 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 69 gudgeon. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.1 oz (0.003 kg)
Median: 0.2 oz (0.006 kg)
Upper quarter: 0.4 oz (0.01 kg)
Heaviest: 0.9 oz (0.025 kg)

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

More fish in this river

Explore the Boldings Brook

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

European eel Chub Perch Roach Minnow

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 →