RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Wensum (Restoration strategy)

Largest measured gudgeon: 15.8 cm

The largest gudgeon measured in Environment Agency surveys of the River Wensum (Restoration strategy) was 15.8 cm, recorded at Swanton Morley (Restoration Reach 14) on 23 July 2019.

Across 216 measured gudgeon, the median measured length was 10.5 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Wensum (Restoration strategy).

See gudgeon records across England →

Most recent observation30 August 2024Upstream Attlebridge · 33 fish
Largest measured gudgeon
15.8 cm
Median length
10.5 cm
Fish measured
216
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
15.8 cm23 Jul 2019Swanton Morley (Restoration Reach 14)156037
14.2 cm8 Jul 2019Hempton Moor (Upstream Fakenham bypass) (reach 27)156033
13.7 cm14 Aug 2024Downstream Porters Lane, Lenwade167127
13.7 cm4 Sept 2012Upstream County School (reach 19)133298
13.4 cm14 Aug 2024Downstream Porters Lane, Lenwade167127
13.3 cm30 Aug 2024Upstream Attlebridge167128
13.3 cm30 Aug 2024Upstream Attlebridge167128
13.3 cm4 Sept 2012Upstream County School (reach 19)133298
13.2 cm30 Aug 2024Upstream Attlebridge167128
13 cm26 Jul 2012Hempton Moor (Upstream Fakenham bypass) (reach 27)132551

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
Upstream Attlebridge30 Aug 202430 Aug 20241
Swanton Morley (Restoration Reach 14)13 Jun 201228 Aug 20244
Three Bridges Farm, Lyng22 Aug 202422 Aug 20241
Downstream Porters Lane, Lenwade14 Aug 202414 Aug 20241
Hempton Moor (Upstream Fakenham bypass) (reach 27)26 Jul 20128 Jul 20193
Upstream County School (reach 19)21 Sept 20095 Jul 20194
Downstream Fakenham Common (Reach 25)26 Jul 201322 Jul 20142
Gt. Ryburgh Common, New loop (Reach24)1 Sept 201122 Jul 20132
Gt Ryburgh End - Downstream confluence to iron bridge21 Sept 201221 Sept 20121
Gt Ryburgh End - New Channel Downstream6 Sept 20126 Sept 20121
Gt Ryburgh End - New channel Upstream5 Sept 20125 Sept 20121
Gt Ryburgh End - Back Channel (Habitat survey)20 Sept 201120 Sept 20111
Gt Ryburgh Common d/s meander18 Aug 20105 Sept 20112
Gt Ryburgh Common upstream18 Aug 201018 Aug 20101
Sayers Meadow30 Jul 199730 Jul 19971

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

1997–2024

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 216 measured fish were spread across different length ranges.

Smallest
5.3 cm
Lower quarter
8.6 cm
Median
10.5 cm
Upper quarter
11.8 cm
Largest
15.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Wensum (Restoration strategy)

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

Minnow Bullhead Dace Stone loach 3-spined stickleback Pike

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 →