Gudgeon · Gobio gobio

Gudgeon in the River Loddon

Largest measured gudgeon: 17.1 cm

The largest gudgeon measured in Environment Agency surveys of the River Loddon was 17.1 cm, recorded at Keepers Cottage on 17 October 2013.

Across 620 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 Loddon.

See gudgeon records across England →

Most recent observation14 April 2026Sheepbridge · 1 fish

Largest measured gudgeon: 17.1 cm
Median length: 10.4 cm
Fish measured: 620
Survey locations: 16

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
17.1 cm	17 Oct 2013	Keepers Cottage	139602
16.6 cm	8 Nov 2012	Keepers Cottage	134906
16.3 cm	17 Oct 2013	Keepers Cottage	139602
15.1 cm	8 Apr 2009	Lower Stanford End	117152
14.6 cm	15 Apr 2010	Lower Stanford End	121388
14.5 cm	27 Oct 2011	Keepers Cottage	128905
14.5 cm	18 Apr 2002	Whistley Mill	50520
14.4 cm	18 Apr 2002	Whistley Mill	50520
14.3 cm	15 Apr 2010	Lower Stanford End	121388
14.2 cm	27 Oct 2011	Keepers Cottage	128905

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
Sheepbridge	2 May 2006	14 Apr 2026	6
Twyford RH channel Downstream	25 Apr 2019	25 Apr 2019	1
Stratfield Saye	15 Oct 2013	12 Oct 2016	2
Keepers Cottage	27 Oct 2011	17 Oct 2013	3
Lower Stanford End	17 Apr 2002	3 Apr 2013	9
Twyford RH Channel	6 Dec 1991	14 Apr 2010	8
Twyford LH Channel	11 Dec 1991	14 Apr 2010	8
Lodge Farm	15 Oct 2008	15 Oct 2008	1
Lilly Mill	5 Nov 1991	7 Nov 2005	4
Upper Stanford End	20 May 2004	21 May 2004	2
Whistley Mill	14 Jan 1992	18 Apr 2002	2
Sindlesham Back Stream	16 May 1992	16 May 1992	1
Dinton Pastures	7 Jan 1992	7 Jan 1992	1
Upstream Bow brook	5 Nov 1991	5 Nov 1991	1
Priory Farm, Swallowfield	22 May 1991	22 May 1991	1
Stanford End	23 Apr 1991	23 Apr 1991	1

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

1991–2026

Survey records by year

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

691

392

093

094

095

096

097

098

099

000

101

302

003

604

405

306

407

508

409

310

111

112

313

014

015

216

017

018

119

020

021

022

023

024

025

126

Fish measured by surveyors

Measured length distribution

See how the 620 measured fish were spread across different length ranges.

Smallest: 3.7 cm
Lower quarter: 9.3 cm
Median: 10.4 cm
Upper quarter: 11.4 cm
Largest: 17.1 cm

0–99 mm

228

100–199 mm

392

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Loddon

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

Chub Brown / sea trout Pike Roach Dace Perch

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 →