RiverFish

Flounder · Platichthys flesus

Flounder in the River Molesey - Teddington

Largest measured flounder: 35.5 cm

The largest flounder measured in Environment Agency surveys of the River Molesey - Teddington was 35.5 cm, recorded at Molesey - Thames Ditton Island, Upper Main Channel on 19 September 2002.

Across 19 measured flounder, the median measured length was 21.4 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 Molesey - Teddington.

See flounder records across England →

Most recent observation2 August 2023Molesey - Thames Ditton Island, Upper Main Channel · 1 fish
Largest measured flounder
35.5 cm
Median length
21.4 cm
Fish measured
19
Survey locations
2

Individual EA measurements

Largest measured flounder

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

LengthSurvey dateSurvey locationSurvey ID
35.5 cm19 Sept 2002Molesey - Thames Ditton Island, Upper Main Channel72159
32 cm11 Sept 2015Molesey - Thames Ditton Island, Upper Main Channel146409
31.8 cm2 Aug 2023Molesey - Thames Ditton Island, Upper Main Channel162895
27.2 cm9 Sept 2016Molesey - Thames Ditton Island, Upper Main Channel149695
25.5 cm19 Sept 2002Molesey - Thames Ditton Island, Upper Main Channel72159
24.7 cm19 Sept 2002Molesey Weir Pool72151
23.4 cm15 Sept 2004Molesey - Thames Ditton Island, Upper Main Channel82507
22.1 cm14 Sept 2011Molesey - Thames Ditton Island, Upper Main Channel128000
22 cm14 Sept 2011Molesey - Thames Ditton Island, Upper Main Channel128000
21.4 cm10 Sept 2003Molesey - Thames Ditton Island, Upper Main Channel77780

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

Explore the river

Where flounder were found

Each point marks a survey location with at least one flounder 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 flounder
Molesey - Thames Ditton Island, Upper Main Channel19 Sept 20022 Aug 202311
Molesey Weir Pool19 Sept 200219 Sept 20021

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

2002–2023

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 19 measured fish were spread across different length ranges.

Smallest
8.9 cm
Lower quarter
19.6 cm
Median
21.4 cm
Upper quarter
25.1 cm
Largest
35.5 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.

Roach Perch Chub Pike Dace Bleak

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 →