RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Ouse

Largest measured gudgeon: 18.8 cm

The largest gudgeon measured in Environment Agency surveys of the River Ouse was 18.8 cm, recorded at Acaster Malbis (single anode) on 15 July 2004.

Across 4,322 measured gudgeon, the median measured length was 6.4 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 Ouse.

See gudgeon records across England →

Most recent observation22 June 2026Naburn Weir (single anode) · 1 fish
Largest measured gudgeon
18.8 cm
Median length
6.4 cm
Fish measured
4,322
Survey locations
21

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
18.8 cm15 Jul 2004Acaster Malbis (single anode)80959
18 cm20 Jul 2004Linton-on-Ouse, below weir (single anode)81016
15.9 cm21 Jun 2018Naburn Weir (single anode)152676
15 cm21 Jul 2000Naburn Weir (single anode)107550
14.8 cm21 Jul 2000Naburn Weir (single anode)107550
14.7 cm8 Jul 2015Beningbrough Village (single anode)145347
14.2 cm21 Jun 2018Naburn Weir (single anode)152676
14.2 cm26 Jul 1996Acaster Malbis (single anode)109432
14 cm27 Jul 1998Naburn Weir (single anode)109797
14 cm26 Jul 1996Acaster Malbis (single anode)109432

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
Naburn Weir (single anode)8 Aug 199722 Jun 202614
Acaster - Fry Survey20 Sept 19847 Aug 202531
Linton-on-Ouse, below weir (single anode)25 Jul 19963 Jul 202522
Beningbrough Village (single anode)24 Jul 19962 Jul 202525
Naburn - Fry Survey25 Sept 200312 Aug 20247
Acaster Malbis (single anode)26 Jul 199627 Jun 201614
Linton weir - u/s - Fry Survey29 Sept 199830 Aug 20122
Linton-on-Ouse u/s weir (single anode)24 Jul 199824 Jun 201012
Beningborough - Fry Survey20 Sept 19841 Sept 200921
Nether Poppleton (single anode)19 Jul 20005 Jul 20056
Linton-on-Ouse u/s weir (gill net)23 Jul 199920 Jul 20044
Beningbrough Village (gill net site)12 Jul 200219 Jul 20042
Linton-on-Ouse u/s (seine netting site)23 Jul 199614 Jul 20037
Beningbrough Village (boom boat site)5 Aug 199710 Jul 20035
Nether Poppleton (boom boat)17 Jul 20029 Jul 20032
Beningbrough Village (seine net site)24 Jul 199612 Jul 20027
Acaster Malbis (boom boat site)20 Jul 200020 Jul 20001
Naburn Weir (boom boat site)8 Aug 199723 Jul 19992
Acaster Malbis (gill net)20 Jul 199920 Jul 19991
Naburn Weir (seine net)8 Aug 19978 Aug 19971
Linton-on-Ouse u/s weir (boom boat)1 Aug 19971 Aug 19971

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

1984–2026

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 4,322 measured fish were spread across different length ranges.

Smallest
0.7 cm
Lower quarter
4 cm
Median
6.4 cm
Upper quarter
9.1 cm
Largest
18.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ouse

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

Roach Perch Ruffe Bleak Pike Common bream

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 →