RiverFish

Bleak · Alburnus alburnus

Bleak in the River Benson - Cleeve (Margin)

Largest measured bleak: 13.8 cm

The largest bleak measured in Environment Agency surveys of the River Benson - Cleeve (Margin) was 13.8 cm, recorded at Weirstream to Wallingford Bridge on 26 July 2012.

Across 77 measured bleak, the median measured length was 9.7 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 Benson - Cleeve (Margin).

See bleak records across England →

Most recent observation7 July 2013Benson - Cleeve (Margins as whole length) · 12 fish
Largest measured bleak
13.8 cm
Median length
9.7 cm
Fish measured
77
Survey locations
4

Individual EA measurements

Largest measured bleak

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
13.8 cm26 Jul 2012Weirstream to Wallingford Bridge135149
13.2 cm26 Jul 2012Weirstream to Wallingford Bridge135149
12.7 cm26 Jul 2012Weirstream to Wallingford Bridge135149
12.2 cm26 Jul 2012Weirstream to Wallingford Bridge135149
12.1 cm26 Jul 2012Wallingford By-Pass to Cleeve Lock135153
12.1 cm26 Jul 2012Weirstream to Wallingford Bridge135149
12 cm26 Jul 2012Weirstream to Wallingford Bridge135149
12 cm26 Jul 2012Weirstream to Wallingford Bridge135149
12 cm26 Jul 2012Weirstream to Wallingford Bridge135149
11.7 cm26 Jul 2012Weirstream to Wallingford Bridge135149

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 surveyedFirst recordedLast recordedVisits finding bleak
Benson - Cleeve (Margins as whole length)7 Jul 20137 Jul 20131
Weirstream to Wallingford Bridge26 Jul 201226 Jul 20121
Wallingford By-Pass to Cleeve Lock26 Jul 201226 Jul 20121
Wallingford Bridge to By-Pass26 Jul 201226 Jul 20121

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

2012–2013

Survey records by year

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

Fish measured by surveyors

Measured length distribution

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

Smallest
4.8 cm
Lower quarter
7.5 cm
Median
9.7 cm
Upper quarter
10.5 cm
Largest
13.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Benson - Cleeve (Margin)

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

Chub Dace Perch Pike Roach Common bream

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 →