Ruffe · Gymnocephalus cernuus

Ruffe in the Old West River

Largest measured ruffe: 14.3 cm

The largest ruffe measured in Environment Agency surveys of the Old West River was 14.3 cm, recorded at Australia Farm on 1 November 1991.

Across 2,934 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 Old West River.

See ruffe records across England →

Most recent observation7 September 2023Smithy Fen Farm · 1 fish

Largest measured ruffe: 14.3 cm
Median length: 7.8 cm
Fish measured: 2,934
Survey locations: 8

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
14.3 cm	1 Nov 1991	Australia Farm	29979
14 cm	12 Oct 2006	Ewell Fen	101823
13.8 cm	5 Jul 1988	Flat Bridge Farm	29968
13.3 cm	25 Sept 1997	Australia Farm	30003
13.3 cm	4 Nov 1991	Stretham Old Engine	29981
13.3 cm	1 Nov 1991	Australia Farm	29979
13.3 cm	29 Oct 1991	Smithy Fen Farm	29978
13.3 cm	29 Oct 1991	Smithy Fen Farm	29978
12.8 cm	30 Oct 1991	Ewell Fen	29977
12.8 cm	29 Oct 1991	Smithy Fen Farm	29978

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
Smithy Fen Farm	6 Jul 1988	7 Sept 2023	13
Flat Bridge Farm	5 Jul 1988	6 Sept 2023	11
Willow Grange Farm	8 Jul 1988	15 Sept 2017	12
Stretham Old Engine	8 Jul 1988	14 Sept 2017	11
Hermitage Marina	4 Jul 1988	16 Sept 2009	11
Australia Farm	7 Jul 1988	18 Oct 2006	7
Ewell Fen	7 Jul 1988	12 Oct 2006	7
Weathersome Common	26 Jul 1988	10 Oct 2006	7

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

1988–2023

Survey records by year

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

888

089

090

891

092

893

094

095

896

897

098

099

800

001

002

403

404

505

806

007

008

509

010

011

012

013

014

015

016

317

018

019

020

021

022

223

Fish measured by surveyors

Measured length distribution

See how the 2,934 measured fish were spread across different length ranges.

Smallest: 3.3 cm
Lower quarter: 6.3 cm
Median: 7.8 cm
Upper quarter: 9.3 cm
Largest: 14.3 cm

0–99 mm

2586

100–199 mm

348

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Old West River

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

Perch Roach Pike Bitterling Tench Bleak

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 →