RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the Middle Level Main Drain

Largest measured ruffe: 13.3 cm

The largest ruffe measured in Environment Agency surveys of the Middle Level Main Drain was 13.3 cm, recorded at Iron Bridge on 14 September 1994.

Across 1,517 measured ruffe, the median measured length was 8.8 cm.

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

See ruffe records across England →

Most recent observation1 August 2023Wiggenhall St Marys · 3 fish
Largest measured ruffe
13.3 cm
Median length
8.8 cm
Fish measured
1,517
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.

LengthSurvey dateSurvey locationSurvey ID
13.3 cm14 Sept 1994Iron Bridge29604
13.3 cm30 Sept 1987Parsonage Farm29592
13.3 cm29 Sept 1987Neeps Bridge29591
13.3 cm28 Sept 1987Mortons Bridge29590
13.3 cm17 Sept 1987Iron Bridge29588
12.8 cm4 Oct 1999Mullicourt Aqueduct29612
12.8 cm4 Oct 1999Mullicourt Aqueduct29612
12.8 cm1 Oct 1987Peter's Drove Bridge29593
12.8 cm28 Sept 1987Mortons Bridge29590
12.8 cm28 Sept 1987Mortons Bridge29590

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
Wiggenhall St Marys2 Oct 19871 Aug 20232
Neeps Bridge29 Sept 198726 Jul 20238
Three Holes16 Sept 198711 Jul 20065
Mortons Bridge28 Sept 19876 Oct 19994
Mullicourt Aqueduct23 Sept 19874 Oct 19994
Parsonage Farm30 Sept 19871 Oct 19994
Peter's Drove Bridge1 Oct 198730 Sept 19994
Iron Bridge17 Sept 198714 Sept 19943

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

1987–2023

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 1,517 measured fish were spread across different length ranges.

Smallest
4.3 cm
Lower quarter
6.3 cm
Median
8.8 cm
Upper quarter
9.8 cm
Largest
13.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Middle Level Main Drain

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

Common bream Roach Silver bream Perch Zander European eel

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 →