Ruffe · Gymnocephalus cernuus

Ruffe in the Bourne Eau

Largest measured ruffe: 12 cm

The largest ruffe measured in Environment Agency surveys of the Bourne Eau was 12 cm, recorded at Pylons on 6 April 1994.

Across 30 measured ruffe, the median measured length was 6.2 cm.

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

See ruffe records across England →

Most recent observation30 April 2008Downstream Mays Sluice · 1 fish

Largest measured ruffe: 12 cm
Median length: 6.2 cm
Fish measured: 30
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
12 cm	6 Apr 1994	Pylons	54331
10 cm	7 Apr 2004	Downstream Mays Sluice	81670
9.5 cm	30 Mar 1994	Downstream Mays Sluice	54330
9 cm	7 Apr 2004	Downstream Mays Sluice	81670
9 cm	9 Jun 2003	Downstream Mays Sluice	78420
8.5 cm	2 May 2007	Downstream Mays Sluice	109116
8.5 cm	7 Apr 2004	Downstream Mays Sluice	81670
7 cm	30 Mar 1994	Downstream Mays Sluice	54330
7 cm	14 May 1991	Upstream Tongue End Pump	54317
6.6 cm	30 Apr 2008	Downstream Mays Sluice	110691

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
Downstream Mays Sluice	30 Mar 1994	30 Apr 2008	5
Pylons	6 Apr 1994	6 Apr 1994	1
Upstream Tongue End Pump	14 May 1991	14 May 1991	1

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

1991–2008

Survey records by year

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

191

092

093

294

095

096

097

098

099

000

001

002

103

104

005

006

107

108

Fish measured by surveyors

Measured length distribution

See how the 30 measured fish were spread across different length ranges.

Smallest: 3 cm
Lower quarter: 5.3 cm
Median: 6.3 cm
Upper quarter: 7 cm
Largest: 12 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Bourne Eau

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

Pike Roach Common bream Dace Tench Chub

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 →