Gudgeon · Gobio gobio

Gudgeon in the River Roding

Largest measured gudgeon: 21 cm

The largest gudgeon measured in Environment Agency surveys of the River Roding was 21 cm, recorded at Redbridge on 20 August 2003.

Across 847 measured gudgeon, the median measured length was 9.1 cm.

Surveyors recorded weights for 2 gudgeon. The median was 0.1 oz (0.0035 kg) and the largest recorded weight was 0.2 oz (0.005 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 Roding.

See gudgeon records across England →

Most recent observation23 April 2026Abridge Village Hall · 16 fish

Largest measured gudgeon: 21 cm
Median length: 9.1 cm
Fish measured: 847
Survey locations: 22

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
21 cm	20 Aug 2003	Redbridge	76769
17.7 cm	15 Oct 2021	Gang Bridge	160887
15.4 cm	5 Aug 2003	Luxborough Lane	76683
15 cm	8 Sept 2016	Luxborough Lane	149444
14.8 cm	8 Sept 2016	Luxborough Lane	149444
14.7 cm	8 Sept 2016	Luxborough Lane	149444
14.5 cm	7 Aug 2003	Crowther Nurseries	76697
14.5 cm	5 Aug 2003	Luxborough Lane	76683
14.5 cm	5 Aug 2003	Luxborough Lane	76683
14.3 cm	5 Sept 2006	Luxborough Lane	101465

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
Abridge Village Hall	23 Apr 2026	23 Apr 2026	1
Waples Mill	18 Mar 1993	14 Aug 2025	3
Littlebury Mill	4 Sept 2002	22 Oct 2024	11
Roding Valley Nature Reserve	25 Sept 2002	8 Aug 2024	7
Crowther Nurseries	3 May 1992	2 Jul 2024	11
Gang Bridge	25 Mar 1990	15 Oct 2021	6
Luxborough Lane	12 May 1992	8 Sept 2016	7
Nether Street	23 Feb 1999	30 Jul 2014	4
High Ongar (Ongar Bridge)	12 Aug 2003	15 Sept 2006	2
Great Canfield	23 Aug 2002	26 Jul 2006	5
Aythorpe Roding	11 Mar 1993	26 Jul 2006	5
Redbridge	17 Sept 2002	20 Sept 2005	4
Abridge	21 Apr 1992	10 Aug 2005	5
Wanstead Park	24 May 1992	23 Nov 2004	3
Mount Loops	7 Mar 1993	14 Aug 2003	3
Loughton	6 Sept 2002	6 Sept 2002	1
Fyfield	2 Mar 1999	2 Mar 1999	1
Barking Creek - Six gates pool L/H Downstream	13 Jul 1993	13 Jul 1993	1
Ilford Golf Course	7 Jun 1992	7 Jun 1992	1
Piggotts Farm M11 section	6 May 1992	6 May 1992	1
Passingford Bridge	28 Apr 1992	28 Apr 1992	1
Leaden Roding	16 Mar 1990	16 Mar 1990	1

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

1990–2026

Survey records by year

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

290

091

792

493

094

095

096

097

098

299

000

001

1402

903

804

605

706

207

308

209

110

011

212

013

114

115

216

017

318

019

020

221

022

123

324

125

126

Fish measured by surveyors

Measured length distribution

See how the 847 measured fish were spread across different length ranges.

Smallest: 2 cm
Lower quarter: 7.2 cm
Median: 9.1 cm
Upper quarter: 11 cm
Largest: 21 cm

0–99 mm

508

100–199 mm

338

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 2 gudgeon. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.002 kg)
Lower quarter: 0.1 oz (0.0028 kg)
Median: 0.1 oz (0.0035 kg)
Upper quarter: 0.1 oz (0.0042 kg)
Heaviest: 0.2 oz (0.005 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 Roding

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

Roach Dace Minnow Pike Chub European eel

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 →