RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the River DS Lark

Largest measured ruffe: 13.3 cm

The largest ruffe measured in Environment Agency surveys of the River DS Lark was 13.3 cm, recorded at Lark Grange on 15 November 1990.

Across 418 measured ruffe, the median measured length was 7.3 cm.

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

See ruffe records across England →

Most recent observation17 September 2015Branch Bridge · 2 fish
Largest measured ruffe
13.3 cm
Median length
7.3 cm
Fish measured
418
Survey locations
10

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
13.3 cm15 Nov 1990Lark Grange29818
12.8 cm14 Jul 1993East Fen Isleham29825
12.8 cm28 Nov 1990Judes Ferry29813
12.8 cm22 Nov 1990Baskey Bay29817
12.3 cm22 Nov 1990Baskey Bay29817
12.3 cm22 Nov 1990Baskey Bay29817
12.3 cm22 Nov 1990Baskey Bay29817
12.3 cm22 Nov 1990Baskey Bay29817
12.3 cm22 Nov 1990Baskey Bay29817
11.8 cm26 Nov 1991East Fen Isleham29821

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
Branch Bridge8 Mar 198817 Sept 20159
Prickwillow13 Nov 199015 Sept 20158
Isleham Lock12 Nov 199014 Sept 201511
Mildenhall20 Nov 19903 Oct 20126
East Fen Isleham6 Dec 199014 Sept 20106
Lark Grange15 Nov 199025 Jul 20004
Baskey Bay22 Nov 199022 Jul 19962
Judes Ferry28 Nov 199026 Jun 19963
Isleham Backwater8 Jul 19938 Jul 19931
Wamil Hall23 Nov 199023 Nov 19901

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

1988–2015

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 418 measured fish were spread across different length ranges.

Smallest
4.5 cm
Lower quarter
6.8 cm
Median
7.3 cm
Upper quarter
9.3 cm
Largest
13.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River DS Lark

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

Roach Perch Pike Dace Gudgeon Common 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 →