RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the River Eton College

Largest measured ruffe: 9.6 cm

The largest ruffe measured in Environment Agency surveys of the River Eton College was 9.6 cm, recorded at Eton Downstream Fry on 7 September 2006.

Across 95 measured ruffe, the median measured length was 5.2 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 Eton College.

See ruffe records across England →

Most recent observation20 August 2014Eton Downstream Fry · 10 fish
Largest measured ruffe
9.6 cm
Median length
5.2 cm
Fish measured
95
Survey locations
2

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
9.6 cm7 Sept 2006Eton Downstream Fry111903
9 cm20 Aug 2014Eton Downstream Fry142448
9 cm20 Aug 2014Eton Downstream Fry142448
8.4 cm20 Aug 2014Eton Downstream Fry142448
8.3 cm20 Aug 2014Eton Downstream Fry142448
8.2 cm20 Aug 2014Eton Downstream Fry142448
7.8 cm20 Aug 2014Eton Downstream Fry142448
7.8 cm20 Aug 2014Eton Downstream Fry142448
7.7 cm20 Aug 2014Eton Downstream Fry142448
7 cm20 Aug 2014Eton Downstream Fry142448

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
Eton Downstream Fry7 Sept 200620 Aug 20143
Eton Upstream Fry21 Aug 200728 Aug 20132

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

2006–2014

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 95 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
4.5 cm
Median
5.2 cm
Upper quarter
5.8 cm
Largest
9.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Eton College

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

Roach Minnow Gudgeon Dace Chub 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 →