RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the Twenty Foot Drain

Largest measured ruffe: 14.3 cm

The largest ruffe measured in Environment Agency surveys of the Twenty Foot Drain was 14.3 cm, recorded at Goosetree Corner on 5 July 1987.

Across 2,186 measured ruffe, the median measured length was 8.3 cm.

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

See ruffe records across England →

Most recent observation28 April 2026Holloways Bridge · 3 fish
Largest measured ruffe
14.3 cm
Median length
8.3 cm
Fish measured
2,186
Survey locations
6

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
14.3 cm5 Jul 1987Goosetree Corner29518
13.8 cm5 Jul 1987Goosetree Corner29518
13.3 cm8 Jul 1987Chainbridge29520
12.8 cm2 Sept 1991Goosetree Corner29524
12.8 cm5 Jul 1987Goosetree Corner29518
12.3 cm1 Sept 1999Goosetree Corner29535
12.3 cm26 Aug 1999Poplartree Bridge29534
12.3 cm26 Aug 1999Poplartree Bridge29534
12.3 cm28 Aug 1994Holloways Bridge29529
12.3 cm2 Aug 1994Chainbridge29532

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
Holloways Bridge10 Jun 198728 Apr 20266
Hobbs Lot Bridge7 Jul 198710 May 20238
Goosetree Corner5 Jul 19873 May 202310
Shepperson's Bridge13 Jul 19872 Jun 20119
Poplartree Bridge8 Jun 198731 May 201110
Chainbridge8 Jul 198725 May 20067

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

1987–2026

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 2,186 measured fish were spread across different length ranges.

Smallest
4 cm
Lower quarter
7.3 cm
Median
8.3 cm
Upper quarter
9.3 cm
Largest
14.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Twenty Foot Drain

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

Perch Roach Common bream Pike Rudd Tench

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 →