Ruffe · Gymnocephalus cernuus

Ruffe in the River Swilgate

Largest measured ruffe: 13.2 cm

The largest ruffe measured in Environment Agency surveys of the River Swilgate was 13.2 cm, recorded at D/s of weir (tidal) on 8 August 2014.

Across 21 measured ruffe, the median measured length was 10.6 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 Swilgate.

See ruffe records across England →

Most recent observation8 August 2014D/s of weir (tidal) · 5 fish

Largest measured ruffe: 13.2 cm
Median length: 10.6 cm
Fish measured: 21
Survey locations: 1

Individual EA measurements

Largest measured ruffe

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
13.2 cm	8 Aug 2014	D/s of weir (tidal)	142144
12 cm	1 Aug 2012	D/s of weir (tidal)	133208
11.9 cm	8 Aug 2014	D/s of weir (tidal)	142144
11.3 cm	11 Jun 2004	D/s of weir (tidal)	80102
11 cm	30 Sept 2005	D/s of weir (tidal)	86518
10.9 cm	1 Aug 2012	D/s of weir (tidal)	133208
10.8 cm	8 Aug 2014	D/s of weir (tidal)	142144
10.8 cm	1 Aug 2012	D/s of weir (tidal)	133208
10.8 cm	15 Aug 2003	D/s of weir (tidal)	76720
10.7 cm	30 Sept 2005	D/s of weir (tidal)	86518

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 surveyed	First recorded	Last recorded	Visits finding ruffe
D/s of weir (tidal)	15 Aug 2003	8 Aug 2014	5

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

2003–2014

Survey records by year

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

103

104

105

006

007

008

009

010

011

112

013

114

Fish measured by surveyors

Measured length distribution

See how the 21 measured fish were spread across different length ranges.

Smallest: 6.5 cm
Lower quarter: 9.5 cm
Median: 10.6 cm
Upper quarter: 10.9 cm
Largest: 13.2 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Swilgate

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

Dace European eel Stone loach Roach 3-spined stickleback Chub

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 →