Flounder · Platichthys flesus

Flounder in the Roman River (Main Reaches)

Largest measured flounder: 29.6 cm

The largest flounder measured in Environment Agency surveys of the Roman River (Main Reaches) was 29.6 cm, recorded at Park Farm on 21 October 2011.

Across 16 measured flounder, the median measured length was 14.6 cm.

Surveyors recorded weights for 2 flounder. The median was 1.5 oz (0.0425 kg) and the largest recorded weight was 1.8 oz (0.05 kg).

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Roman River (Main Reaches).

See flounder records across England →

Most recent observation9 October 2022Bounstead FGS · 2 fish

Largest measured flounder: 29.6 cm
Median length: 14.6 cm
Fish measured: 16
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.

Length	Survey date	Survey location	Survey ID
29.6 cm	21 Oct 2011	Park Farm	128846
22.7 cm	9 Oct 2022	Bounstead FGS	162119
21.2 cm	9 Oct 2022	Bounstead FGS	162119
20.8 cm	16 Sept 2021	Bounstead FGS	160617
19.2 cm	16 Sept 2021	Bounstead FGS	160617
16.7 cm	27 Oct 1987	Park Farm	14678
16.3 cm	21 Oct 2011	Park Farm	128846
15 cm	12 Oct 1990	Park Farm	14683
14.2 cm	24 Oct 2019	Bounstead FGS	155849
12.3 cm	24 Oct 2019	Bounstead FGS	155849

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 surveyed	First recorded	Last recorded	Visits finding flounder
Bounstead FGS	24 Oct 2019	9 Oct 2022	3
Park Farm	15 Mar 1984	21 Oct 2011	4

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

1984–2022

Survey records by year

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

184

085

086

187

088

089

190

091

092

093

094

095

096

097

098

099

000

001

002

003

004

005

006

007

008

009

010

111

012

013

014

015

016

017

018

119

020

121

122

Fish measured by surveyors

Measured length distribution

See how the 16 measured fish were spread across different length ranges.

Smallest: 6.1 cm
Lower quarter: 10.7 cm
Median: 14.6 cm
Upper quarter: 19.6 cm
Largest: 29.6 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 2 flounder. This is a subset of the measured fish and may not represent the whole population.

Lightest: 1.2 oz (0.035 kg)
Lower quarter: 1.4 oz (0.0388 kg)
Median: 1.5 oz (0.0425 kg)
Upper quarter: 1.6 oz (0.0462 kg)
Heaviest: 1.8 oz (0.05 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Roman River (Main Reaches)

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

European eel Roach Stone loach Dace Gudgeon Brown / sea trout

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 →