Flounder · Platichthys flesus

Flounder in the River Wroxham Broad

Largest measured flounder: 19.8 cm

The largest flounder measured in Environment Agency surveys of the River Wroxham Broad was 19.8 cm, recorded at 196 on 13 September 1991.

Across 6 measured flounder, the median measured length was 10.8 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 Wroxham Broad.

See flounder records across England →

Most recent observation11 August 2005204 · 1 fish

Largest measured flounder: 19.8 cm
Median length: 10.8 cm
Fish measured: 6
Survey locations: 4

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
19.8 cm	13 Sept 1991	196	17627
18.5 cm	30 Aug 2001	199	52015
13.3 cm	13 Sept 1991	196	17627
8.4 cm	13 Aug 2003	206	77065
6.4 cm	11 Aug 2005	204	85607
5.8 cm	12 Aug 2003	196	77067

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
204	11 Aug 2005	11 Aug 2005	1
206	13 Aug 2003	13 Aug 2003	1
196	13 Sept 1991	12 Aug 2003	2
199	30 Aug 2001	30 Aug 2001	1

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

1991–2005

Survey records by year

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

191

092

093

094

095

096

097

098

099

000

101

002

203

004

105

Fish measured by surveyors

Measured length distribution

See how the 6 measured fish were spread across different length ranges.

Smallest: 5.8 cm
Lower quarter: 6.9 cm
Median: 10.9 cm
Upper quarter: 17.2 cm
Largest: 19.8 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Wroxham Broad

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

Roach Perch Common bream Ruffe Pike 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 →