RiverFish

Rudd · Scardinius erythrophthalmus

Rudd in the River Brett (Main Reaches)

Largest measured rudd: 23 cm

The largest rudd measured in Environment Agency surveys of the River Brett (Main Reaches) was 23 cm, recorded at Cosford Bridge on 25 March 1994.

Across 90 measured rudd, the median measured length was 11.7 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 Brett (Main Reaches).

See rudd records across England →

Most recent observation7 April 2026Higham FGS · 15 fish
Largest measured rudd
23 cm
Median length
11.7 cm
Fish measured
90
Survey locations
13

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
23 cm25 Mar 1994Cosford Bridge13756
21 cm22 Feb 1988Cobbolds Mill13736
20 cm7 Apr 2000Cobbolds Mill15493
19 cm6 Apr 2000Chelsworth15492
18.5 cm12 Feb 1982Bridge Farm Chelsworth81807
18.1 cm11 Apr 2006Semer A90605
17.9 cm11 Mar 1988Chelsworth13735
17.5 cm11 Mar 1988Chelsworth13735
17.4 cm11 Mar 1988Chelsworth13735
17.4 cm11 Mar 1988Chelsworth13735

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 FGS20 Nov 19847 Apr 20266
Hadleigh Town29 Mar 199426 Apr 20242
Cosford Bridge19 Dec 198413 Apr 20183
Waterhouse Farm28 Mar 200624 Apr 20122
Cobbolds Mill22 Feb 198811 Apr 20124
Chelsworth11 Mar 198813 Apr 20066
Semer A14 Dec 198411 Apr 20064
Hadleigh STW6 Apr 20066 Apr 20061
Upstream Mill Farm29 Mar 200629 Mar 20061
Cherry Hill24 Mar 199424 Mar 19941
Peyton Hall20 Dec 198420 Dec 19841
Semer B (Dairy Farm - River Brett)13 Dec 198413 Dec 19841
Bridge Farm Chelsworth12 Feb 198212 Feb 19821

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

1982–2026

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 90 measured fish were spread across different length ranges.

Smallest
4.7 cm
Lower quarter
10.1 cm
Median
11.7 cm
Upper quarter
13.9 cm
Largest
23 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Brett (Main Reaches)

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

European eel Pike Roach Gudgeon Dace Perch

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 →