Rudd · Scardinius erythrophthalmus

Rudd in the River Deben (Main Reaches)

Largest measured rudd: 17 cm

The largest rudd measured in Environment Agency surveys of the River Deben (Main Reaches) was 17 cm, recorded at Upstream Kettleburgh on 29 January 1998.

Across 41 measured rudd, the median measured length was 9.5 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 Deben (Main Reaches).

See rudd records across England →

Most recent observation14 April 2025Ufford · 8 fish

Largest measured rudd: 17 cm
Median length: 9.5 cm
Fish measured: 41
Survey locations: 8

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
17 cm	29 Jan 1998	Upstream Kettleburgh	4088
15.2 cm	27 Apr 2010	Upstream Kettleburgh	121578
13.7 cm	19 Apr 2016	Upstream Kettleburgh	148014
13.7 cm	19 Apr 2016	Upstream Kettleburgh	148014
13.7 cm	19 Apr 2016	Upstream Kettleburgh	148014
13.6 cm	9 Dec 1997	Downstream Wickham Market	4093
13.4 cm	19 Feb 2004	Melton Mill to Ufford Mill	103966
13.3 cm	19 Apr 2016	Upstream Kettleburgh	148014
13 cm	9 Dec 1997	Downstream Wickham Market	4093
12.1 cm	15 Dec 1997	Downstream Glevering Hall	4091

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
Ufford	28 Nov 1997	14 Apr 2025	3
Downstream Glevering Hall	15 Dec 1997	18 Apr 2024	2
Upstream Kettleburgh	29 Jan 1998	19 Apr 2016	3
Downstream Letheringham Mill	4 Mar 2004	4 Mar 2004	1
Melton Mill to Ufford Mill	19 Feb 2004	19 Feb 2004	1
Upstream Cretingham	1 Aug 1994	4 Feb 1998	2
Downstream Wickham Market	9 Dec 1997	9 Dec 1997	1
Upstream Wickham Market	10 Jun 1991	10 Jun 1991	1

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

1991–2025

Survey records by year

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

191

092

093

194

095

096

397

298

099

000

001

002

003

204

005

006

007

008

009

210

011

012

013

014

015

116

017

018

019

020

021

022

023

124

125

Fish measured by surveyors

Measured length distribution

See how the 41 measured fish were spread across different length ranges.

Smallest: 5.1 cm
Lower quarter: 7 cm
Median: 9.5 cm
Upper quarter: 12 cm
Largest: 17 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Deben (Main Reaches)

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

Roach Pike European eel Perch Stone loach 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 →