Rudd · Scardinius erythrophthalmus

Rudd in the Main River Isle

Largest measured rudd: 22.5 cm

The largest rudd measured in Environment Agency surveys of the Main River Isle was 22.5 cm, recorded at Ilford Bridges (Te) on 11 June 1992.

Across 10 measured rudd, the median measured length was 8.9 cm.

Surveyors recorded weights for 6 rudd. The median was 0.5 oz (0.014 kg) and the largest recorded weight was 8.7 oz (0.246 kg).

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

See rudd records across England →

Most recent observation23 June 2022Midelney · 1 fish

Largest measured rudd: 22.5 cm
Median length: 8.9 cm
Fish measured: 10
Survey locations: 3

Individual EA measurements

Largest measured rudd

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

Length	Survey date	Survey location	Survey ID
22.5 cm	11 Jun 1992	Ilford Bridges (Te)	80035
16.9 cm	11 Sept 2007	Midelney	108011
12.7 cm	11 Sept 2007	Midelney	108011
9.9 cm	11 Jun 1992	Ilford Bridges (Te)	80035
8.9 cm	23 Jun 2022	Midelney	161067
8.9 cm	11 Jun 1992	Ilford Bridges (Te)	80035
8.6 cm	11 Jun 1992	Ilford Bridges (Te)	80035
8.3 cm	11 Jun 1992	Ilford Bridges (Te)	80035
7.7 cm	11 Jul 2007	Cocks Bridge (Te)	105896
6.9 cm	11 Jun 1992	Ilford Bridges (Te)	80035

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 surveyed	First recorded	Last recorded	Visits finding rudd
Midelney	11 Sept 2007	23 Jun 2022	2
Cocks Bridge (Te)	11 Jul 2007	11 Jul 2007	1
Ilford Bridges (Te)	11 Jun 1992	11 Jun 1992	1

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

1992–2022

Survey records by year

Each bar shows how many survey visits recorded rudd that year.

192

093

094

095

096

097

098

099

000

001

002

003

004

005

006

207

008

009

010

011

012

013

014

015

016

017

018

019

020

021

122

Fish measured by surveyors

Measured length distribution

See how the 10 measured fish were spread across different length ranges.

Smallest: 6.9 cm
Lower quarter: 8.4 cm
Median: 8.9 cm
Upper quarter: 12 cm
Largest: 22.5 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 6 rudd. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.2 oz (0.005 kg)
Lower quarter: 0.4 oz (0.0105 kg)
Median: 0.5 oz (0.014 kg)
Upper quarter: 0.6 oz (0.0182 kg)
Heaviest: 8.7 oz (0.246 kg)

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

More fish in this river

Explore the Main River Isle

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

European eel Stone loach Minnow Chub Dace Roach

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 →