RiverFish

Rudd · Scardinius erythrophthalmus

Rudd in the River Stour

Largest measured rudd: 27.7 cm

The largest rudd measured in Environment Agency surveys of the River Stour was 27.7 cm, recorded at Clare Mill on 12 September 1991.

Across 483 measured rudd, the median measured length was 12 cm.

Surveyors recorded weights for 43 rudd. The median was 2.5 oz (0.07 kg) and the largest recorded weight was 14 oz (0.396 kg).

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

See rudd records across England →

Most recent observation3 July 2026Higham Hall · 2 fish
Largest measured rudd
27.7 cm
Median length
12 cm
Fish measured
483
Survey locations
41

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
27.7 cm12 Sept 1991Clare Mill13611
27.5 cm9 Oct 1980Stoke By Clare77512
26.3 cm9 Oct 1980Stoke By Clare77512
26.1 cm15 Nov 1994Mill Green Radial Gate13659
25.2 cm9 Oct 1980Stoke By Clare77512
25 cm30 Oct 1980Pentlow Mill77515
25 cm9 Oct 1980Stoke By Clare77512
24.9 cm23 Aug 2018Pentlow Mill154325
24.6 cm2 Oct 2018Clare Mill154323
24.5 cm30 Oct 1980Pentlow Mill77515

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
Higham Hall3 Aug 20113 Jul 20264
Rats Castle21 Oct 198023 Sept 20244
Bower Hall29 Aug 20063 Sept 20242
Kedington Radial Gate2 Nov 198828 Aug 20243
Bush Boake Allen7 Oct 202214 Aug 20242
Pentlow Mill30 Oct 198031 Jul 20246
Pitmire A4 Aug 199726 Jul 20243
Wiston Mill2 Aug 201217 Jul 20243
Upstream Dedham Mill19 Jun 202419 Jun 20241
Fen Bridge23 Aug 198311 Oct 20226
Lamarsh FGS A1 Aug 200717 Sept 20224
Tendring Hall19 Aug 202219 Aug 20221
Bures Mill31 Jul 20079 Nov 20215
Bures Bridge A13 Jul 20111 Oct 20213
Liston Mill25 Aug 20065 Oct 20184
Clare Mill21 Oct 19882 Oct 20187
Baythorne End15 Oct 198020 Sept 20188
Wormingford Mill19 Jul 201819 Jul 20181
Wixoe Pumping Station31 Oct 19881 Sept 20157
Anchor Bridge8 Jul 20158 Jul 20151
Flatford Mill1 Jul 20151 Jul 20151
Mill Meadow30 Jul 198523 Jul 20142
Mill Farm Clare18 Sept 200627 Sept 20122
Mill Green Radial Gate16 Oct 198515 Sept 20096
Great Thurlow9 Oct 20004 Sept 20093
Rodbridge Park18 Aug 20066 Aug 20092
Shalford Meadow5 Aug 20095 Aug 20091
Priory Meadow19 Oct 19944 Aug 20092
Bakers Mill A21 Jun 20043 Aug 20095
Wissington28 Jul 200928 Jul 20091
Boxted Mill21 Jul 20036 Jul 20092
Brantham Lock22 Jun 198822 Jun 20092
Stoke By Clare9 Oct 19805 Oct 20065
Little Wratting2 Oct 198021 Sept 20063
Kedington FGS1 Nov 198820 Sept 20062
Glemsford Pits23 Aug 200022 Aug 20062
Brundon (River Stour Middle)17 Aug 200617 Aug 20061
Wick Farm14 Jul 200614 Jul 20061
Cattawade30 Aug 198330 Aug 19831
Downstream Dedham Mill19 Aug 198319 Aug 19831
Pentlow Street28 Oct 198028 Oct 19801

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

1980–2026

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 483 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
8.7 cm
Median
12 cm
Upper quarter
14.8 cm
Largest
27.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 43 rudd. This is a subset of the measured fish and may not represent the whole population.

Lightest
1.1 oz (0.032 kg)
Lower quarter
2 oz (0.0575 kg)
Median
2.5 oz (0.07 kg)
Upper quarter
7.7 oz (0.219 kg)
Heaviest
14 oz (0.396 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Stour

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

Roach European eel Perch Pike Chub Dace

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 →