Gudgeon · Gobio gobio

Gudgeon in the River Allen

Largest measured gudgeon: 15.5 cm

The largest gudgeon measured in Environment Agency surveys of the River Allen was 15.5 cm, recorded at Downstream Wimborne on 27 July 2001.

Across 114 measured gudgeon, the median measured length was 9.9 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 Allen.

See gudgeon records across England →

Most recent observation30 June 2023Downstream Walford Mill Road Bridge · 1 fish

Largest measured gudgeon: 15.5 cm
Median length: 9.9 cm
Fish measured: 114
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
15.5 cm	27 Jul 2001	Downstream Wimborne	106025
14 cm	27 Jul 2001	Downstream Wimborne	106025
13.6 cm	27 Jul 2001	Downstream Wimborne	106025
13.3 cm	27 Jul 2001	Downstream Wimborne	106025
13 cm	2 Aug 2018	Downstream Wimborne	152974
13 cm	13 Jun 2007	Downstream Wimborne	105792
12.9 cm	27 Jul 2001	Downstream Wimborne	106025
12.8 cm	13 Jun 2007	Downstream Wimborne	105792
12.8 cm	27 Jul 2001	Downstream Wimborne	106025
12.7 cm	27 Jul 2001	Downstream Wimborne	106025

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
Downstream Walford Mill Road Bridge	30 Jun 2023	30 Jun 2023	1
Deans Court	30 Jun 2023	30 Jun 2023	1
Downstream Wimborne	27 Jul 2001	2 Aug 2018	4

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

2001–2023

Survey records by year

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

101

002

003

004

005

106

107

008

009

010

011

012

013

014

015

016

017

118

019

020

021

022

223

Fish measured by surveyors

Measured length distribution

See how the 114 measured fish were spread across different length ranges.

Smallest: 5.8 cm
Lower quarter: 8.4 cm
Median: 9.9 cm
Upper quarter: 11.1 cm
Largest: 15.5 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Allen

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

Brown / sea trout European eel Atlantic salmon Grayling Dace 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 →