Ruffe · Gymnocephalus cernuus

Ruffe in the River Ormesby Broad

Largest measured ruffe: 12.4 cm

The largest ruffe measured in Environment Agency surveys of the River Ormesby Broad was 12.4 cm, recorded at 569 on 16 September 1997.

Across 89 measured ruffe, the median measured length was 8 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 Ormesby Broad.

See ruffe records across England →

Most recent observation16 September 1997569 · 53 fish

Largest measured ruffe: 12.4 cm
Median length: 8 cm
Fish measured: 89
Survey locations: 8

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
12.4 cm	16 Sept 1997	569	17690
12.2 cm	16 Sept 1997	569	17690
11.5 cm	16 Sept 1997	569	17690
11.5 cm	16 Sept 1997	569	17690
11.3 cm	16 Sept 1997	569	17690
11.3 cm	9 Sept 1997	561	17682
10 cm	16 Sept 1997	569	17690
9.5 cm	16 Sept 1997	569	17690
9.4 cm	16 Sept 1997	569	17690
9.2 cm	16 Sept 1997	569	17690

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
569	16 Sept 1997	16 Sept 1997	1
568	16 Sept 1997	16 Sept 1997	1
562	10 Sept 1997	10 Sept 1997	1
561	9 Sept 1997	9 Sept 1997	1
Margin 7	30 Jan 1994	30 Jan 1994	1
Margin 6	30 Jan 1994	30 Jan 1994	1
Margin 2	25 Jan 1994	25 Jan 1994	1
Margin 1	25 Jan 1994	25 Jan 1994	1

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

1994–1997

Survey records by year

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

494

095

096

497

Fish measured by surveyors

Measured length distribution

See how the 89 measured fish were spread across different length ranges.

Smallest: 4.7 cm
Lower quarter: 7.3 cm
Median: 8 cm
Upper quarter: 8.4 cm
Largest: 12.4 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ormesby Broad

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

Perch Common bream Pike Roach Tench 10-spined stickleback

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 →