Ruffe · Gymnocephalus cernuus

Ruffe in the Sowy River

Largest measured ruffe: 11.7 cm

The largest ruffe measured in Environment Agency surveys of the Sowy River was 11.7 cm, recorded at Downstream Beer Wall on 20 August 2008.

Across 10 measured ruffe, the median measured length was 10.1 cm.

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

See ruffe records across England →

Most recent observation21 August 2008Upstream Beer Wall · 4 fish

Largest measured ruffe: 11.7 cm
Median length: 10.1 cm
Fish measured: 10
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.

Length	Survey date	Survey location	Survey ID
11.7 cm	20 Aug 2008	Downstream Beer Wall	116636
11.5 cm	21 Aug 2008	Upstream Beer Wall	116641
10.8 cm	19 Aug 2008	Downstream Beer Wall	116635
10.7 cm	21 Aug 2008	Downstream Beer Wall	116637
10.5 cm	21 Aug 2008	Downstream Beer Wall	116637
9.6 cm	21 Aug 2008	Upstream Beer Wall	116641
6.8 cm	20 Aug 2008	Upstream Beer Wall	116640
6.6 cm	20 Aug 2008	Upstream Beer Wall	116640
6.3 cm	21 Aug 2008	Upstream Beer Wall	116641
6.2 cm	21 Aug 2008	Upstream Beer Wall	116641

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
Upstream Beer Wall	20 Aug 2008	21 Aug 2008	2
Downstream Beer Wall	19 Aug 2008	21 Aug 2008	3

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

2008–2008

Survey records by year

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

508

Fish measured by surveyors

Measured length distribution

See how the 10 measured fish were spread across different length ranges.

Smallest: 6.2 cm
Lower quarter: 6.7 cm
Median: 10.1 cm
Upper quarter: 10.8 cm
Largest: 11.7 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Sowy River

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

Perch

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 →