RiverFish

Bleak · Alburnus alburnus

Bleak in the River Calder

Largest measured bleak: 16.3 cm

The largest bleak measured in Environment Agency surveys of the River Calder was 16.3 cm, recorded at Chantry Bridge on 23 June 2015.

Across 41 measured bleak, the median measured length was 10.9 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 Calder.

See bleak records across England →

Most recent observation24 June 2024Chantry Bridge · 24 fish
Largest measured bleak
16.3 cm
Median length
10.9 cm
Fish measured
41
Survey locations
1

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
16.3 cm23 Jun 2015Chantry Bridge145166
15.8 cm4 Jul 2012Chantry Bridge132269
15.3 cm25 Jul 2009Chantry Bridge118826
14.6 cm29 Jun 2010Chantry Bridge122773
14.4 cm23 Jun 2015Chantry Bridge145166
14.4 cm23 Jun 2015Chantry Bridge145166
13 cm29 Jun 2010Chantry Bridge122773
12.5 cm24 Jun 2024Chantry Bridge165359
12.4 cm24 Jun 2024Chantry Bridge165359
12.3 cm24 Jun 2024Chantry Bridge165359

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
Chantry Bridge25 Jul 200924 Jun 20245

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

2009–2024

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 41 measured fish were spread across different length ranges.

Smallest
5.6 cm
Lower quarter
9.7 cm
Median
10.9 cm
Upper quarter
12.2 cm
Largest
16.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Calder

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

Brown / sea trout Stone loach Bullhead Gudgeon Chub Roach

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 →