RiverFish

Bleak · Alburnus alburnus

Bleak in the Relief Channel

Largest measured bleak: 13.3 cm

The largest bleak measured in Environment Agency surveys of the Relief Channel was 13.3 cm, recorded at Saddlebow Bridge on 11 October 1991.

Across 778 measured bleak, the median measured length was 10.8 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Relief Channel.

See bleak records across England →

Most recent observation30 August 2005Stow Bridge · 1 fish
Largest measured bleak
13.3 cm
Median length
10.8 cm
Fish measured
778
Survey locations
10

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
13.3 cm11 Oct 1991Saddlebow Bridge30262
12.8 cm15 Oct 1991Tail Sluice30263
12.8 cm11 Oct 1991Saddlebow Bridge30262
12.8 cm10 Oct 1991Wiggenhall Bridge30261
12.8 cm10 Oct 1991Wiggenhall Bridge30261
12.3 cm15 Oct 1991Tail Sluice30263
12.3 cm15 Oct 1991Tail Sluice30263
12.3 cm15 Oct 1991Tail Sluice30263
12.3 cm15 Oct 1991Tail Sluice30263
12.3 cm15 Oct 1991Tail Sluice30263

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
Stow Bridge2 Oct 199130 Aug 20052
Wiggenhall Bridge10 Oct 199115 Sept 19932
Tail Sluice15 Oct 199115 Oct 19911
Saddlebow Bridge11 Oct 199111 Oct 19911
Polver Farm Magdalen9 Oct 19919 Oct 19911
Magdalen Bridge8 Oct 19918 Oct 19911
Holme Farm Magdalen4 Oct 19914 Oct 19911
DS Stow Bridge3 Oct 19913 Oct 19911
Downham Market STW1 Oct 19911 Oct 19911
DS Downham Bridge30 Sept 199130 Sept 19911

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

1991–2005

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 778 measured fish were spread across different length ranges.

Smallest
5.8 cm
Lower quarter
10.3 cm
Median
10.8 cm
Upper quarter
11.3 cm
Largest
13.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Relief Channel

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

Perch Roach Ruffe Zander Pike European eel

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 →