Ruffe · Gymnocephalus cernuus

Ruffe in the River Burwell Lode

Largest measured ruffe: 13.3 cm

The largest ruffe measured in Environment Agency surveys of the River Burwell Lode was 13.3 cm, recorded at Burwell on 23 October 1987.

Across 45 measured ruffe, the median measured length was 7.8 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 Burwell Lode.

See ruffe records across England →

Most recent observation9 June 2026Burwell · 1 fish

Largest measured ruffe: 13.3 cm
Median length: 7.8 cm
Fish measured: 45
Survey locations: 3

Individual EA measurements

Largest measured ruffe

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
13.3 cm	23 Oct 1987	Burwell	29333
12.8 cm	27 Oct 1987	Cock-Up Bridge	29334
12.3 cm	16 Nov 1987	Upware	29335
12 cm	11 Jun 2014	Upware	141188
11.3 cm	16 Apr 1993	Cock-Up Bridge	29340
11.3 cm	16 Nov 1987	Upware	29335
11.3 cm	23 Oct 1987	Burwell	29333
10.8 cm	22 Apr 1998	Upware	29344
10.8 cm	21 Apr 1993	Upware	29341
10.8 cm	15 Apr 1993	Burwell	29339

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where ruffe were found

Each point marks a survey location with at least one ruffe 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 ruffe
Burwell	23 Oct 1987	9 Jun 2026	4
Upware	8 Oct 1984	11 Jun 2014	7
Cock-Up Bridge	5 Oct 1984	16 Apr 1993	3

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

1984–2026

Survey records by year

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

284

085

086

387

088

089

190

091

092

393

094

095

096

097

198

099

000

001

002

003

004

005

006

007

008

009

210

011

012

013

114

015

016

017

018

019

020

021

022

023

024

025

126

Fish measured by surveyors

Measured length distribution

See how the 45 measured fish were spread across different length ranges.

Smallest: 3.8 cm
Lower quarter: 5.8 cm
Median: 7.8 cm
Upper quarter: 10.3 cm
Largest: 13.3 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Burwell Lode

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

Perch Pike Roach Bitterling Common bream Gudgeon

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 →