RiverFish

Rudd · Scardinius erythrophthalmus

Rudd in the River Wensum (central)

Largest measured rudd: 21.6 cm

The largest rudd measured in Environment Agency surveys of the River Wensum (central) was 21.6 cm, recorded at Swanton Morley on 5 August 2022.

Across 52 measured rudd, the median measured length was 11.3 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 (central).

See rudd records across England →

Most recent observation7 August 2025Downstream Elsing Mill · 1 fish
Largest measured rudd
21.6 cm
Median length
11.3 cm
Fish measured
52
Survey locations
10

Individual EA measurements

Largest measured rudd

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

LengthSurvey dateSurvey locationSurvey ID
21.6 cm5 Aug 2022Swanton Morley161900
19.7 cm11 Sept 2008Hellesdon Road (Albert's)116058
18.8 cm8 Sept 2018Swanton Morley154135
18.6 cm5 Aug 2022Swanton Morley161900
18.2 cm31 Jul 2015Upstream Lenwade Mill145820
17.6 cm4 Aug 2022Downstream Elsing Mill161878
17 cm5 Aug 2022Swanton Morley161900
16.1 cm5 Aug 1997Heigham Waterworks17361
15.9 cm9 Oct 2023Swanton Morley164260
15.8 cm1 Aug 2025Downstream Gt Ryburgh Bridge177853

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where rudd were found

Each point marks a survey location with at least one rudd 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 rudd
Downstream Elsing Mill4 Aug 20227 Aug 20253
Downstream Gt Ryburgh Bridge31 Jul 20191 Aug 20253
Swanton Morley8 Sept 20189 Oct 20233
Upstream Bintree Mill10 Jul 201517 Aug 20182
Upstream Lenwade Mill31 Jul 201531 Jul 20151
Hellesdon Road (Albert's)4 Aug 198611 Sept 20084
Heigham Waterworks14 Aug 19865 Aug 19972
Upstream Drayton Green Lane7 Jul 19977 Jul 19971
Edwards & Holmes Yard11 Aug 198611 Aug 19861
Fish Farm1 Aug 19861 Aug 19861

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 rudd that year.

Fish measured by surveyors

Measured length distribution

See how the 52 measured fish were spread across different length ranges.

Smallest
4.5 cm
Lower quarter
8.1 cm
Median
11.3 cm
Upper quarter
14.3 cm
Largest
21.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Wensum (central)

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

Pike Dace Roach European eel Perch Gudgeon

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 →