RiverFish

Gudgeon · Gobio gobio

Gudgeon in the Old River Lea

Largest measured gudgeon: 13.7 cm

The largest gudgeon measured in Environment Agency surveys of the Old River Lea was 13.7 cm, recorded at Cornmill Meadows 3 (Mile Nursery) on 1 May 2007.

Across 188 measured gudgeon, the median measured length was 9.4 cm.

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

See gudgeon records across England →

Most recent observation21 May 2026Cornmill Meadows 3 (Mile Nursery) · 12 fish
Largest measured gudgeon
13.7 cm
Median length
9.4 cm
Fish measured
188
Survey locations
1

Individual EA measurements

Largest measured gudgeon

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
13.7 cm1 May 2007Cornmill Meadows 3 (Mile Nursery)105396
13.5 cm1 May 2007Cornmill Meadows 3 (Mile Nursery)105396
12.9 cm6 May 2009Cornmill Meadows 3 (Mile Nursery)117205
12.6 cm9 Apr 2013Cornmill Meadows 3 (Mile Nursery)135811
12.5 cm16 May 2016Cornmill Meadows 3 (Mile Nursery)148046
12.5 cm6 May 2009Cornmill Meadows 3 (Mile Nursery)117205
12.2 cm5 May 2010Cornmill Meadows 3 (Mile Nursery)121479
12.2 cm1 May 2007Cornmill Meadows 3 (Mile Nursery)105396
11.7 cm1 May 2007Cornmill Meadows 3 (Mile Nursery)105396
11.7 cm1 May 2007Cornmill Meadows 3 (Mile Nursery)105396

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 surveyedFirst recordedLast recordedVisits finding gudgeon
Cornmill Meadows 3 (Mile Nursery)1 May 200721 May 202611

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

2007–2026

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 188 measured fish were spread across different length ranges.

Smallest
4.5 cm
Lower quarter
8.4 cm
Median
9.4 cm
Upper quarter
10.4 cm
Largest
13.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Old River Lea

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

Perch Roach Chub Pike Tench Minnow

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 →