RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the River R.Slea

Largest measured ruffe: 13.6 cm

The largest ruffe measured in Environment Agency surveys of the River R.Slea was 13.6 cm, recorded at South Kyme Bridge on 17 October 2013.

Across 154 measured ruffe, the median measured length was 8.4 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 R.Slea.

See ruffe records across England →

Most recent observation4 October 2017Chapel Hill (Kyme) · 3 fish
Largest measured ruffe
13.6 cm
Median length
8.4 cm
Fish measured
154
Survey locations
7

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
13.6 cm17 Oct 2013South Kyme Bridge139748
13.4 cm17 Oct 2013South Kyme Bridge139748
13 cm12 Apr 2007South Kyme Bridge105055
12.4 cm21 Apr 1988Between Halfpenny and Cobblers Lock53190
11.4 cm21 Apr 1988Between Halfpenny and Cobblers Lock53190
11.2 cm16 Sept 1991South Kyme Bridge53250
11.2 cm21 Apr 1988Between Halfpenny and Cobblers Lock53190
11.1 cm22 Apr 1988Cobblers53191
11.1 cm20 Apr 1988Halfpenny Hatch53192
10.8 cm2 Apr 2008Halfpenny Hatch110829

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
Chapel Hill (Kyme)13 May 19854 Oct 20176
South Kyme Bridge16 Sept 199117 Oct 20135
Halfpenny Hatch20 Apr 19889 Oct 20125
Cobblers Lock10 Sept 199110 Sept 19911
Cobblers22 Apr 198822 Apr 19881
Between Halfpenny and Cobblers Lock21 Apr 198821 Apr 19881
Manor Farm19 Apr 198819 Apr 19881

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

1985–2017

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 154 measured fish were spread across different length ranges.

Smallest
3.7 cm
Lower quarter
6.5 cm
Median
8.5 cm
Upper quarter
9.6 cm
Largest
13.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River R.Slea

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

European eel Roach 3-spined stickleback Gudgeon Dace Stone loach

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 →