Flounder · Platichthys flesus

Flounder in the River Ely Ouse

Largest measured flounder: 28.3 cm

The largest flounder measured in Environment Agency surveys of the River Ely Ouse was 28.3 cm, recorded at Ten Mile Bank on 5 September 1990.

Across 14 measured flounder, the median measured length was 6 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 Ely Ouse.

See flounder records across England →

Most recent observation22 September 2006Denver · 1 fish

Largest measured flounder: 28.3 cm
Median length: 6 cm
Fish measured: 14
Survey locations: 3

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
28.3 cm	5 Sept 1990	Ten Mile Bank	29943
23.3 cm	26 Sept 1990	Denver	29935
8.3 cm	26 Sept 1990	Denver	29935
7.8 cm	16 Aug 1993	Denver	29955
6.8 cm	16 Aug 1993	Denver	29955
6.3 cm	16 Aug 1993	Denver	29955
6.3 cm	16 Aug 1993	Denver	29955
5.8 cm	16 Aug 1993	Denver	29955
5.8 cm	16 Aug 1993	Denver	29955
5.5 cm	22 Sept 2006	Denver	101513

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
Denver	26 Sept 1990	22 Sept 2006	3
Wissey Outfall	13 Aug 1993	13 Aug 1993	1
Ten Mile Bank	5 Sept 1990	5 Sept 1990	1

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

1990–2006

Survey records by year

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

290

091

092

293

094

095

096

097

098

099

000

001

002

003

004

005

106

Fish measured by surveyors

Measured length distribution

See how the 14 measured fish were spread across different length ranges.

Smallest: 4.8 cm
Lower quarter: 5.4 cm
Median: 6.1 cm
Upper quarter: 7.6 cm
Largest: 28.3 cm

0–99 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ely Ouse

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

Perch Roach Common bream Ruffe Pike Zander

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 →