RiverFish

Rudd · Scardinius erythrophthalmus

Rudd in the River Upper Ouse

Largest measured rudd: 30.8 cm

The largest rudd measured in Environment Agency surveys of the River Upper Ouse was 30.8 cm, recorded at Emberton Park on 10 October 1994.

Across 42 measured rudd, the median measured length was 12.8 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 Upper Ouse.

See rudd records across England →

Most recent observation12 June 2025Passenham · 2 fish
Largest measured rudd
30.8 cm
Median length
12.8 cm
Fish measured
42
Survey locations
9

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
30.8 cm10 Oct 1994Emberton Park28921
29.8 cm10 Oct 1994Emberton Park28921
28.3 cm10 Oct 1994Emberton Park28921
19.3 cm16 Nov 1988Clifton Reynes28883
18 cm18 Jun 2024Buckingham165466
17.3 cm7 Oct 1997Lavendon Mill28942
16.3 cm2 Aug 1988Mill Farm Gayhurst28828
16 cm3 Jun 2025Buckingham177131
15.8 cm10 Apr 1997Buckingham28865
15.8 cm25 Oct 1991Newport Pagnell28905

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
Passenham12 Jun 202512 Jun 20251
Buckingham10 Apr 19973 Jun 20255
Newport Pagnell25 Oct 199124 Jul 20063
Wolverton Mill28 Apr 199719 May 20033
Emberton Park10 Oct 199416 Oct 19972
Newton Blossomville8 Oct 19978 Oct 19971
Lavendon Mill7 Oct 19977 Oct 19971
Clifton Reynes16 Nov 198816 Nov 19881
Mill Farm Gayhurst2 Aug 19882 Aug 19881

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

1988–2025

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 42 measured fish were spread across different length ranges.

Smallest
5.5 cm
Lower quarter
11 cm
Median
12.8 cm
Upper quarter
15.2 cm
Largest
30.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Upper Ouse

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

Pike Perch Dace Roach Chub 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 →