Ruffe · Gymnocephalus cernuus

Ruffe in the River West Fen Catchwater

Largest measured ruffe: 15 cm

The largest ruffe measured in Environment Agency surveys of the River West Fen Catchwater was 15 cm, recorded at Hagnaby Lock on 2 October 2003.

Across 1,859 measured ruffe, the median measured length was 7.2 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 West Fen Catchwater.

See ruffe records across England →

Most recent observation4 May 2016West Houses · 2 fish

Largest measured ruffe: 15 cm
Median length: 7.2 cm
Fish measured: 1,859
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
15 cm	2 Oct 2003	Hagnaby Lock	78778
13.5 cm	5 Jun 1990	Hagnaby Lock	58221
13.2 cm	11 May 2000	Revesby Bridge	59009
13.2 cm	20 Apr 1993	Hall Lane Stickney	58231
13 cm	5 Jun 1990	Hagnaby Lock	58221
12.8 cm	4 Jun 1990	Hall Lane Stickney	58220
12.7 cm	8 Jun 2009	West Houses	118089
12.7 cm	12 Jun 2008	West Houses	111304
12.7 cm	4 Jun 1990	Hall Lane Stickney	58220
12.6 cm	7 May 1996	Tumby Woodside	58253

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
West Houses	6 May 1987	4 May 2016	17
Hagnaby Lock	5 May 1987	18 May 2006	9
Hall Lane Stickney	2 Dec 1987	12 May 2000	5
Revesby Bridge	7 May 1987	11 May 2000	3
Tumby Woodside	7 May 1996	7 May 1996	1
Mareham-Le-Fen	21 May 1987	21 May 1987	1

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

1987–2016

Survey records by year

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

587

088

089

490

091

092

393

094

095

496

097

098

099

400

001

202

203

204

105

206

107

108

109

110

011

112

113

014

015

116

Fish measured by surveyors

Measured length distribution

See how the 1,859 measured fish were spread across different length ranges.

Smallest: 3.5 cm
Lower quarter: 6.4 cm
Median: 7.2 cm
Upper quarter: 9 cm
Largest: 15 cm

0–99 mm

1671

100–199 mm

188

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River West Fen Catchwater

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

Pike Perch Roach Gudgeon Tench European eel

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 →