Gudgeon · Gobio gobio

Gudgeon in the River Hart

Largest measured gudgeon: 13.6 cm

The largest gudgeon measured in Environment Agency surveys of the River Hart was 13.6 cm, recorded at Bramshill Police College on 8 April 2010.

Across 67 measured gudgeon, the median measured length was 10.4 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 Hart.

See gudgeon records across England →

Most recent observation21 April 2026Bramshill Police College · 38 fish

Largest measured gudgeon: 13.6 cm
Median length: 10.4 cm
Fish measured: 67
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.

Length	Survey date	Survey location	Survey ID
13.6 cm	8 Apr 2010	Bramshill Police College	121398
13.4 cm	8 Apr 2010	Bramshill Police College	121398
13.3 cm	8 Apr 2010	Bramshill Police College	121398
13.2 cm	8 Apr 2010	Bramshill Police College	121398
12.7 cm	8 Apr 2010	Bramshill Police College	121398
12.6 cm	8 Apr 2010	Bramshill Police College	121398
12.6 cm	8 Apr 2010	Bramshill Police College	121398
12.5 cm	8 Apr 2010	Bramshill Police College	121398
12.4 cm	21 Apr 2026	Bramshill Police College	181057
12.3 cm	21 Apr 2026	Bramshill Police College	181057

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
Bramshill Police College	8 Apr 2010	21 Apr 2026	3
Upstream Pale Lane	13 Apr 2006	13 Apr 2006	1
Elvetham Estate	4 Jun 1992	4 Jun 1992	1
Hartley Witney STW	3 Jun 1992	3 Jun 1992	1
Lea Farm, Hazeley	18 May 1992	18 May 1992	1

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

1992–2026

Survey records by year

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

392

093

094

095

096

097

098

099

000

001

002

003

004

005

106

007

008

009

110

011

012

113

014

015

016

017

018

019

020

021

022

023

024

025

126

Fish measured by surveyors

Measured length distribution

See how the 67 measured fish were spread across different length ranges.

Smallest: 2.7 cm
Lower quarter: 9.2 cm
Median: 10.4 cm
Upper quarter: 11.6 cm
Largest: 13.6 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Hart

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

Stone loach Bullhead Minnow Chub 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 →