Flounder · Platichthys flesus

Flounder in the River Barton Broad

Largest measured flounder: 20.6 cm

The largest flounder measured in Environment Agency surveys of the River Barton Broad was 20.6 cm, recorded at 458 on 16 September 1988.

Across 77 measured flounder, the median measured length was 8.2 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 Barton Broad.

See flounder records across England →

Most recent observation29 July 2005451 · 1 fish

Largest measured flounder: 20.6 cm
Median length: 8.2 cm
Fish measured: 77
Survey locations: 13

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
20.6 cm	16 Sept 1988	458	17644
18 cm	29 Jul 2005	451	85758
18 cm	19 Sept 1988	452	17639
17.6 cm	1 Sept 2000	456	18779
17.5 cm	22 Aug 2002	446	61134
17.5 cm	15 Aug 2000	453	18776
17.5 cm	14 Aug 1996	449	17659
17 cm	21 Aug 1992	456	17656
17 cm	19 Aug 1992	449	17649
16.1 cm	3 Aug 2004	449	83655

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
451	16 Sept 1988	29 Jul 2005	4
449	19 Aug 1992	3 Aug 2004	3
450	31 Jul 2003	31 Jul 2003	1
455	26 Aug 1988	17 Jul 2003	3
446	20 Sept 1988	22 Aug 2002	3
456	21 Sept 1988	1 Sept 2000	4
453	18 Aug 1992	15 Aug 2000	2
458	16 Sept 1988	8 Aug 2000	3
457	1 Aug 1996	1 Aug 1996	1
452	19 Sept 1988	19 Sept 1988	1
445	19 Sept 1988	19 Sept 1988	1
454	15 Sept 1988	15 Sept 1988	1
447	31 Aug 1988	31 Aug 1988	1

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

1988–2005

Survey records by year

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

988

089

090

091

492

093

094

095

596

097

098

099

400

001

102

203

204

105

Fish measured by surveyors

Measured length distribution

See how the 77 measured fish were spread across different length ranges.

Smallest: 4.4 cm
Lower quarter: 7 cm
Median: 8.2 cm
Upper quarter: 14.6 cm
Largest: 20.6 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Barton Broad

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

Roach Ruffe Common bream Perch Gudgeon Pike

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 →