Bleak · Alburnus alburnus

Bleak in the River Chertsey - Shepperton

Largest measured bleak: 14.5 cm

The largest bleak measured in Environment Agency surveys of the River Chertsey - Shepperton was 14.5 cm, recorded at Chertsey Main on 7 September 2012.

Across 223 measured bleak, the median measured length was 9.2 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 Chertsey - Shepperton.

See bleak records across England →

Most recent observation6 September 2013Chertsey Main · 13 fish

Largest measured bleak: 14.5 cm
Median length: 9.2 cm
Fish measured: 223
Survey locations: 2

Individual EA measurements

Largest measured bleak

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
14.5 cm	7 Sept 2012	Chertsey Main	133533
14.3 cm	7 Sept 2012	Chertsey Main	133533
14 cm	7 Sept 2012	Chertsey Main	133533
13.8 cm	6 Sept 2013	Chertsey Main	138733
13.8 cm	7 Sept 2012	Chertsey Main	133533
13.8 cm	7 Sept 2012	Chertsey Main	133533
13.7 cm	7 Sept 2012	Chertsey Main	133533
13.7 cm	7 Sept 2012	Chertsey Main	133533
13.6 cm	7 Sept 2012	Chertsey Main	133533
13.5 cm	7 Sept 2012	Chertsey Main	133533

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

Explore the river

Where bleak were found

Each point marks a survey location with at least one bleak 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 bleak
Chertsey Main	20 Sept 1995	6 Sept 2013	8
Chertsey Weir Pool	1 Sept 1995	8 Sept 2005	2

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

1995–2013

Survey records by year

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

295

096

097

098

099

100

001

002

003

004

205

006

007

008

109

110

111

112

113

Fish measured by surveyors

Measured length distribution

See how the 223 measured fish were spread across different length ranges.

Smallest: 3.9 cm
Lower quarter: 8.4 cm
Median: 9.2 cm
Upper quarter: 11.6 cm
Largest: 14.5 cm

0–99 mm

139

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Chertsey - Shepperton

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

Chub European eel Perch Pike Roach Dace

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 →