Ruffe · Gymnocephalus cernuus

Ruffe in the Forty Foot Drain

Largest measured ruffe: 12.8 cm

The largest ruffe measured in Environment Agency surveys of the Forty Foot Drain was 12.8 cm, recorded at Nightlayers Fen on 9 September 1987.

Across 1,224 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 Forty Foot Drain.

See ruffe records across England →

Most recent observation18 July 2023Badney Drove · 11 fish

Largest measured ruffe: 12.8 cm
Median length: 7.8 cm
Fish measured: 1,224
Survey locations: 6

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
12.8 cm	9 Sept 1987	Nightlayers Fen	29543
12.3 cm	20 Aug 1991	Nightlayers Fen	29549
12.3 cm	9 Sept 1987	Nightlayers Fen	29543
11.8 cm	12 Aug 1999	Nightlayers Fen	29559
11.8 cm	21 Aug 1994	Leonard Childs Bridge	29554
11.8 cm	9 Sept 1987	Nightlayers Fen	29543
11.8 cm	9 Sept 1987	Nightlayers Fen	29543
11.8 cm	9 Sept 1987	Nightlayers Fen	29543
11.8 cm	9 Sept 1987	Nightlayers Fen	29543
11.8 cm	9 Sept 1987	Nightlayers Fen	29543

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
Badney Drove	8 Sept 1987	18 Jul 2023	7
Ramsey Forty Foot Bridge	3 Sept 1987	1 Jun 2006	5
Puddock Bridge	7 Sept 1987	11 Sept 1999	4
Nightlayers Fen	9 Sept 1987	12 Aug 1999	4
Leonard Childs Bridge	8 Sept 1987	21 Aug 1994	3
Ramsey Hollow	14 Aug 1991	16 Aug 1994	2

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

1987–2023

Survey records by year

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

587

088

089

090

691

092

093

694

095

096

097

098

499

000

001

002

003

004

005

206

007

008

009

010

111

012

013

014

015

016

017

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 1,224 measured fish were spread across different length ranges.

Smallest: 3.8 cm
Lower quarter: 7.3 cm
Median: 7.8 cm
Upper quarter: 9.3 cm
Largest: 12.8 cm

0–99 mm

1074

100–199 mm

150

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Forty Foot Drain

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

Common bream Perch Roach Rudd Silver bream Pike

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 →