RiverFish

Roach · Rutilus rutilus

Roach in the River Sunbury - Molesey

Largest measured roach: 27.2 cm

The largest roach measured in Environment Agency surveys of the River Sunbury - Molesey was 27.2 cm, recorded at Downstream Walton Intake on 14 September 2006.

Across 4,918 measured roach, the median measured length was 7.4 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 Sunbury - Molesey.

See roach records across England →

Most recent observation1 August 2023Sunbury Main Channel · 137 fish
Largest measured roach
27.2 cm
Median length
7.4 cm
Fish measured
4,918
Survey locations
5

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
27.2 cm14 Sept 2006Downstream Walton Intake108711
27.2 cm14 Sept 2006Sunbury Main Channel101390
25.1 cm14 Sept 2006Upstream Walton Intake108713
25.1 cm14 Sept 2006Sunbury Main Channel101390
24.8 cm13 Sept 2005Downstream Walton Intake108712
24.8 cm13 Sept 2005Sunbury Main Channel86253
23.9 cm13 Sept 2005Upstream Walton Intake108714
23.9 cm13 Sept 2005Sunbury Main Channel86253
23.8 cm13 Sept 2005Upstream Walton Intake108714
23.8 cm13 Sept 2005Sunbury Main Channel86253

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
Sunbury Main Channel1 Sept 19951 Aug 20239
Upstream Walton Intake13 Sept 200510 Sept 20138
Sunbury Weirpool1 Sept 199510 Sept 201313
Downstream Walton Intake13 Sept 200510 Sept 20138
Hampton to Molesey13 Sept 200713 Sept 20071

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

1995–2023

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 4,918 measured fish were spread across different length ranges.

Smallest
1.6 cm
Lower quarter
5.5 cm
Median
7.4 cm
Upper quarter
10.8 cm
Largest
27.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Sunbury - Molesey

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

Dace Perch Pike Bleak European eel 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 →