Ruffe · Gymnocephalus cernuus

Ruffe in the Medlam Drain

Largest measured ruffe: 14.3 cm

The largest ruffe measured in Environment Agency surveys of the Medlam Drain was 14.3 cm, recorded at Medlam Bridge on 30 October 1990.

Across 177 measured ruffe, the median measured length was 7.4 cm.

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

See ruffe records across England →

Most recent observation4 July 2016Skirbeck Farm · 23 fish

Largest measured ruffe: 14.3 cm
Median length: 7.4 cm
Fish measured: 177
Survey locations: 4

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	30 Oct 1990	Medlam Bridge	58259
13.8 cm	14 Nov 1990	Skirbeck Farm	58258
13.8 cm	30 Oct 1990	Medlam Bridge	58259
13.8 cm	30 Oct 1990	Medlam Bridge	58259
13.2 cm	23 May 2006	Medlam Bridge	90977
12.8 cm	30 Oct 1990	Medlam Bridge	58259
12.5 cm	30 Oct 1990	Medlam Bridge	58259
12.4 cm	14 Nov 1990	Skirbeck Farm	58258
12.3 cm	14 Nov 1990	Skirbeck Farm	58258
11.5 cm	14 Nov 1990	Skirbeck Farm	58258

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
Skirbeck Farm	14 Nov 1990	4 Jul 2016	6
Medlam Bridge	30 Oct 1990	17 Jun 2016	6
Hakerley Bridge	24 Oct 1990	11 Aug 2011	5
Frithville	17 May 1996	9 Aug 2011	2

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

1990–2016

Survey records by year

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

390

091

092

293

094

095

296

097

098

099

000

201

002

003

004

005

306

007

008

009

010

311

012

213

014

015

216

Fish measured by surveyors

Measured length distribution

See how the 177 measured fish were spread across different length ranges.

Smallest: 4.7 cm
Lower quarter: 6.4 cm
Median: 7.4 cm
Upper quarter: 8.3 cm
Largest: 14.3 cm

0–99 mm

153

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Medlam Drain

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

Perch Pike Roach Common bream Tench Silver bream

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 →