RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the River Sunbury - Molesey

Largest measured ruffe: 12.6 cm

The largest ruffe measured in Environment Agency surveys of the River Sunbury - Molesey was 12.6 cm, recorded at Sunbury Main Channel on 15 September 2004.

Across 9 measured ruffe, the median measured length was 10.2 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 Sunbury - Molesey.

See ruffe records across England →

Most recent observation13 September 2007Sunbury Main Channel · 3 fish
Largest measured ruffe
12.6 cm
Median length
10.2 cm
Fish measured
9
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.

LengthSurvey dateSurvey locationSurvey ID
12.6 cm15 Sept 2004Sunbury Main Channel82549
11.4 cm13 Sept 2007Sunbury Main Channel116669
11.4 cm13 Sept 2007Downstream Walton Intake106766
10.2 cm14 Sept 2006Downstream Walton Intake108711
10.2 cm14 Sept 2006Sunbury Main Channel101390
10 cm13 Sept 2007Sunbury Main Channel116669
10 cm13 Sept 2007Upstream Walton Intake106763
5.9 cm13 Sept 2007Sunbury Main Channel116669
5.9 cm13 Sept 2007Upstream Walton Intake106763

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 surveyedFirst recordedLast recordedVisits finding ruffe
Upstream Walton Intake13 Sept 200713 Sept 20071
Sunbury Main Channel15 Sept 200413 Sept 20073
Downstream Walton Intake14 Sept 200613 Sept 20072

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

2004–2007

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 9 measured fish were spread across different length ranges.

Smallest
5.9 cm
Lower quarter
10 cm
Median
10.2 cm
Upper quarter
11.4 cm
Largest
12.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Sunbury - Molesey

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

Dace Roach Perch Pike Bleak 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 →