Rudd · Scardinius erythrophthalmus

Rudd in the River Ivel

Largest measured rudd: 17.8 cm

The largest rudd measured in Environment Agency surveys of the River Ivel was 17.8 cm, recorded at Girtford Weir on 7 July 1989.

Across 50 measured rudd, the median measured length was 13.3 cm.

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

See rudd records across England →

Most recent observation8 October 2025Henlow · 1 fish

Largest measured rudd: 17.8 cm
Median length: 13.3 cm
Fish measured: 50
Survey locations: 5

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
17.8 cm	7 Jul 1989	Girtford Weir	29251
16.6 cm	8 Oct 2025	Henlow	179271
16.3 cm	7 Jul 1989	Girtford Weir	29251
16.3 cm	7 Jul 1989	Girtford Weir	29251
16.3 cm	5 Jul 1989	Beeston	29250
15.3 cm	7 Jul 1989	Girtford Weir	29251
15.3 cm	7 Jul 1989	Girtford Weir	29251
15.3 cm	7 Jul 1989	Girtford Weir	29251
14.8 cm	7 Jul 1989	Girtford Weir	29251
14.8 cm	7 Jul 1989	Girtford Weir	29251

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
Henlow	16 Jun 2003	8 Oct 2025	3
Girtford Weir	7 Jul 1989	14 Jul 2004	2
Broom Mill	16 Jan 1992	16 Jan 1992	1
Langford Nursery	6 Jan 1992	6 Jan 1992	1
Beeston	5 Jul 1989	5 Jul 1989	1

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

1989–2025

Survey records by year

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

289

090

091

292

093

094

095

096

097

098

099

000

001

002

103

104

005

006

007

108

009

010

011

012

013

014

015

016

017

018

019

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 50 measured fish were spread across different length ranges.

Smallest: 7.8 cm
Lower quarter: 10.3 cm
Median: 13.3 cm
Upper quarter: 14.8 cm
Largest: 17.8 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ivel

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

Chub Pike Roach Gudgeon Dace Bullhead

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 →