RiverFish

Gudgeon · Gobio gobio

Gudgeon in the South Holland Main Drain

Largest measured gudgeon: 14 cm

The largest gudgeon measured in Environment Agency surveys of the South Holland Main Drain was 14 cm, recorded at Shell Bridge on 15 April 1986.

Across 592 measured gudgeon, the median measured length was 7.5 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the South Holland Main Drain.

See gudgeon records across England →

Most recent observation1 April 2025Coy Sluice · 5 fish
Largest measured gudgeon
14 cm
Median length
7.5 cm
Fish measured
592
Survey locations
15

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
14 cm15 Apr 1986Shell Bridge109366
13.2 cm12 May 2008Coy Sluice111172
12.5 cm14 Apr 2010Cliftons Bridge123186
12.4 cm14 Apr 2010Cliftons Bridge123186
12.1 cm12 May 2008Coy Sluice111172
12 cm27 Mar 2006Little Holland - Middle Site90756
11.9 cm20 Apr 2016Shell Bridge147960
11.8 cm20 Apr 2016Shell Bridge147960
11.8 cm14 Apr 2010Cliftons Bridge123186
11.8 cm14 Apr 2010Cliftons Bridge123186

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
Coy Sluice16 May 20071 Apr 20253
Shell Bridge15 Apr 198626 Mar 20257
Cliftons Bridge21 Jun 199127 Apr 20166
Red House Bridge19 Jun 19917 Apr 20112
Peak Hill10 Jul 19911 Apr 20112
Upstream Wisemans Pumping Station5 Jan 198816 Apr 20103
Foremans Bridge26 Apr 200720 Apr 20092
Little Holland - Middle Site27 Mar 200627 Mar 20061
Red House Farm6 Mar 20066 Mar 20061
Donnington Pumping Station?6 Mar 20066 Mar 20061
Upstream Coy Sluice4 Jun 19974 Jun 19971
Holland House1 Jul 19911 Jul 19911
Leedsgate Bridge25 Jun 199125 Jun 19911
Downstream Coy Sluice20 Jun 199120 Jun 19911
Bells Bridge12 Jan 198812 Jan 19881

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

1986–2025

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 592 measured fish were spread across different length ranges.

Smallest
4 cm
Lower quarter
7 cm
Median
7.5 cm
Upper quarter
9 cm
Largest
14 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the South Holland Main Drain

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

Roach Pike Common bream Perch Rudd 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 →