Gudgeon · Gobio gobio

Gudgeon in the River East Stour

Largest measured gudgeon: 16 cm

The largest gudgeon measured in Environment Agency surveys of the River East Stour was 16 cm, recorded at Mersham on 9 October 2002.

Across 286 measured gudgeon, the median measured length was 10.1 cm.

Surveyors recorded weights for 97 gudgeon. The median was 0.3 oz (0.008 kg) and the largest recorded weight was 1.6 oz (0.045 kg).

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

See gudgeon records across England →

Most recent observation20 June 2024Mersham · 25 fish

Largest measured gudgeon: 16 cm
Median length: 10.1 cm
Fish measured: 286
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
16 cm	9 Oct 2002	Mersham	72598
15.5 cm	9 Oct 2002	Mersham	72598
15.4 cm	19 Jun 2012	Mersham	132452
15.4 cm	9 Oct 2002	Mersham	72598
15.3 cm	9 Oct 2002	Mersham	72598
14.8 cm	9 Oct 2002	Mersham	72598
14.7 cm	9 Oct 2002	Mersham	72598
14.6 cm	9 Oct 2002	Mersham	72598
14.5 cm	9 Oct 2002	Mersham	72598
14.5 cm	9 Oct 2002	Mersham	72598

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
Mersham	9 Oct 2002	20 Jun 2024	5
Sellindge	8 Jul 2003	11 Jun 2024	5
Stour Centre	8 Aug 2006	8 Aug 2006	1

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

2002–2024

Survey records by year

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

102

103

004

005

306

007

008

009

010

011

212

013

014

015

016

017

218

019

020

021

022

023

224

Fish measured by surveyors

Measured length distribution

See how the 286 measured fish were spread across different length ranges.

Smallest: 4.4 cm
Lower quarter: 8.7 cm
Median: 10.1 cm
Upper quarter: 11.4 cm
Largest: 16 cm

0–99 mm

130

100–199 mm

156

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 97 gudgeon. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.003 kg)
Lower quarter: 0.2 oz (0.006 kg)
Median: 0.3 oz (0.008 kg)
Upper quarter: 0.6 oz (0.017 kg)
Heaviest: 1.6 oz (0.045 kg)

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

More fish in this river

Explore the River East Stour

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

European eel Stone loach Bullhead Minnow Perch Dace

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 →