RiverFish

Roach · Rutilus rutilus

Roach in the Whittlesey Dyke

Largest measured roach: 25.3 cm

The largest roach measured in Environment Agency surveys of the Whittlesey Dyke was 25.3 cm, recorded at Ashline Lock on 26 June 1991.

Across 10,648 measured roach, the median measured length was 8.3 cm.

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

See roach records across England →

Most recent observation12 July 2023Ashline Lock · 66 fish
Largest measured roach
25.3 cm
Median length
8.3 cm
Fish measured
10,648
Survey locations
4

Individual EA measurements

Largest measured roach

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

LengthSurvey dateSurvey locationSurvey ID
25.3 cm26 Jun 1991Ashline Lock29757
24.8 cm28 Jun 1991Engine Farm29759
24.8 cm26 Jun 1991Ashline Lock29757
24.3 cm5 Jun 1987Burnthouse Bridge29756
23.6 cm6 Jul 2023Engine Farm162499
23.3 cm26 Jun 1991Ashline Lock29757
22.8 cm4 Jul 1994Angle Corner Bridge29762
22.3 cm26 Jun 1991Ashline Lock29757
21.3 cm4 Jun 1999Burnthouse Bridge29767
21.3 cm28 Jun 1991Engine Farm29759

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where roach were found

Each point marks a survey location with at least one roach 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 roach
Ashline Lock15 May 198712 Jul 20238
Engine Farm1 Jun 19876 Jul 20235
Burnthouse Bridge5 Jun 198712 Jun 20065
Angle Corner Bridge21 May 19873 Jun 19994

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 roach that year.

Fish measured by surveyors

Measured length distribution

See how the 10,648 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
7.3 cm
Median
8.3 cm
Upper quarter
10.3 cm
Largest
25.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Whittlesey Dyke

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

Common bream Perch Pike Tench Silver bream Rudd

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 →