RiverFish

Rudd · Scardinius erythrophthalmus

Rudd in the Grand Union Canal

Largest measured rudd: 15.8 cm

The largest rudd measured in Environment Agency surveys of the Grand Union Canal was 15.8 cm, recorded at Wolverton on 22 December 1993.

Across 49 measured rudd, the median measured length was 8.3 cm.

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

See rudd records across England →

Most recent observation1 February 1994Cosgrove · 1 fish
Largest measured rudd
15.8 cm
Median length
8.3 cm
Fish measured
49
Survey locations
6

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
15.8 cm22 Dec 1993Wolverton28808
15.3 cm30 Mar 1990Woolstone28789
14.8 cm17 Dec 1993Linford Manor Park28806
14.8 cm4 Apr 1990Cosgrove28793
14.8 cm30 Mar 1990Woolstone28789
14.3 cm30 Mar 1990Woolstone28789
14.3 cm27 Mar 1990Bradwell Waste Tip28791
13.8 cm27 Mar 1990Bradwell Waste Tip28791
13.8 cm27 Mar 1990Bradwell Waste Tip28791
13.3 cm1 Feb 1994Cosgrove28809

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
Cosgrove4 Apr 19901 Feb 19942
Wolverton28 Mar 199022 Dec 19932
Linford Manor Park17 Dec 199317 Dec 19931
Woolstone30 Mar 199016 Dec 19932
Bradwell Waste Tip27 Mar 199027 Mar 19901
Stoke Hammond20 Mar 199020 Mar 19901

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

1990–1994

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 49 measured fish were spread across different length ranges.

Smallest
5.8 cm
Lower quarter
7.8 cm
Median
8.3 cm
Upper quarter
12.8 cm
Largest
15.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Grand Union Canal

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

Perch Common bream Gudgeon Roach Ruffe 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 →