RiverFish

Roach · Rutilus rutilus

Roach in the River Molesey - Teddington

Largest measured roach: 30 cm

The largest roach measured in Environment Agency surveys of the River Molesey - Teddington was 30 cm, recorded at Molesey Weir Pool on 4 August 2022.

Across 1,366 measured roach, the median measured length was 10.2 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 Molesey - Teddington.

See roach records across England →

Most recent observation31 July 2025Molesey - Thames Ditton Island, Upper Main Channel · 10 fish
Largest measured roach
30 cm
Median length
10.2 cm
Fish measured
1,366
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
30 cm4 Aug 2022Molesey Weir Pool161352
27 cm4 Aug 2022Molesey - Thames Ditton Island, Upper Main Channel161353
26.7 cm23 Jul 2024Molesey - Thames Ditton Island, Upper Main Channel165846
26.6 cm23 Jul 2024Molesey - Thames Ditton Island, Upper Main Channel165846
25.7 cm23 Jul 2024Molesey - Thames Ditton Island, Upper Main Channel165846
25.1 cm4 Aug 2022Molesey - Thames Ditton Island, Upper Main Channel161353
24.5 cm15 Sept 2006Molesey - Thames Ditton Island, Upper Main Channel101394
24.4 cm23 Jul 2024Molesey - Thames Ditton Island, Upper Main Channel165846
24 cm4 Aug 2022Molesey - Thames Ditton Island, Upper Main Channel161353
23.6 cm23 Jul 2024Molesey - Thames Ditton Island, Upper Main Channel165846

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
Molesey - Thames Ditton Island, Upper Main Channel1 Sept 199531 Jul 202521
Molesey Weir Pool1 Sept 199523 Jul 202422
Surbiton Intake to Kingston1 Sept 199516 Sept 20094
Molesey Back Weir10 Sept 200310 Sept 20031

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

1995–2025

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 1,366 measured fish were spread across different length ranges.

Smallest
2.5 cm
Lower quarter
8.5 cm
Median
10.2 cm
Upper quarter
11.7 cm
Largest
30 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Molesey - Teddington

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

Perch Chub Pike Dace Bleak Gudgeon

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 →