RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Derwent (Yorkshire)

Largest measured gudgeon: 16.2 cm

The largest gudgeon measured in Environment Agency surveys of the River Derwent (Yorkshire) was 16.2 cm, recorded at Stamford Bridge DERCORS10 on 11 August 2010.

Across 4,486 measured gudgeon, the median measured length was 3.8 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 Derwent (Yorkshire).

See gudgeon records across England →

Most recent observation11 August 2025Yedingham - Fry Survey · 8 fish
Largest measured gudgeon
16.2 cm
Median length
3.8 cm
Fish measured
4,486
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
16.2 cm11 Aug 2010Stamford Bridge DERCORS10124186
16.2 cm6 Sept 2002Stamford Bridge DERCORS1072277
15.5 cm16 Jul 2018Malton DERCORS5152889
14.5 cm14 Sept 2009Malton DERCORS5119828
14.3 cm14 Sept 2009Malton DERCORS5119828
14.1 cm14 Sept 2007Malton DERCORS5108104
14 cm6 Sept 2000Stamford Bridge DERCORS10109920
13.9 cm17 Sept 2009Stamford Bridge DERCORS10119811
13.8 cm11 Aug 2010Stamford Bridge DERCORS10124186
13.8 cm9 Aug 2010Malton DERCORS5124885

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
Yedingham - Fry Survey22 Sept 198611 Aug 202512
Bubwith - Fry Survey18 Sept 198419 Aug 202432
Yedingham DERCORS45 Sept 200131 Jul 20249
Sutton Upon Derwent DERCORS1826 Sept 199730 Jul 202410
Stamford Bridge DERCORS1024 Apr 199529 Jul 202415
Malton DERCORS55 Sept 200116 Jul 201811
Kirkham Abbey DERCORS77 Sept 200116 Jul 201812
Buttercrambe DERCORS95 Sept 200228 Jun 201810
Howsham DERCORS812 Sept 200116 Jul 201510
Low Hutton DERCORS624 Apr 199521 Sept 20057
Wheldrake Ings DERCORS1917 Sept 200116 Sept 20043
Barmby on the Marsh DERCORS2123 Sept 199711 Sept 20035
Breighton DERCORS2017 Sept 200110 Sept 20033
Yedingham Fish Haven - Fry Survey18 Sept 198929 Sept 19989
Low Marishes Fish Haven - Fry Survey18 Sept 198918 Sept 19957

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

1984–2025

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 4,486 measured fish were spread across different length ranges.

Smallest
1.4 cm
Lower quarter
2.8 cm
Median
3.8 cm
Upper quarter
9.1 cm
Largest
16.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Derwent (Yorkshire)

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

Minnow Bullhead Stone loach Dace European eel 3-spined stickleback

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 →