RiverFish

Bleak · Alburnus alburnus

Bleak in the River DS Lark

Largest measured bleak: 15.8 cm

The largest bleak measured in Environment Agency surveys of the River DS Lark was 15.8 cm, recorded at Isleham Backwater on 1 July 1996.

Across 632 measured bleak, the median measured length was 11.3 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 DS Lark.

See bleak records across England →

Most recent observation17 September 2024Branch Bridge · 138 fish
Largest measured bleak
15.8 cm
Median length
11.3 cm
Fish measured
632
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
15.8 cm1 Jul 1996Isleham Backwater29836
15.3 cm28 Jun 2000Isleham Backwater30785
14.8 cm28 Jun 2000Isleham Backwater30785
14.5 cm3 Oct 2006Isleham Lock101754
14.3 cm28 Jun 2000Isleham Backwater30785
14.3 cm28 Jun 2000Isleham Backwater30785
14.3 cm26 Jun 2000East Fen Isleham30784
14.3 cm22 Jul 1996Baskey Bay29838
14.3 cm1 Jul 1996Isleham Backwater29836
14.3 cm1 Jul 1996Isleham Backwater29836

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
Branch Bridge8 Jul 200017 Sept 20243
Wamil Hall18 Jun 19965 Sept 20244
Prickwillow23 May 199315 Sept 20159
Isleham Lock14 Oct 20036 Sept 20075
East Fen Isleham6 Dec 19902 Oct 20067
Mildenhall9 Oct 20039 Oct 20031
Baskey Bay22 Jul 19965 Jul 20002
Isleham Backwater8 Jul 199328 Jun 20003
Judes Ferry22 Jun 200022 Jun 20001
Lark Grange22 Jul 199322 Jul 19931

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

1990–2024

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 632 measured fish were spread across different length ranges.

Smallest
5.8 cm
Lower quarter
10.5 cm
Median
11.3 cm
Upper quarter
12 cm
Largest
15.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River DS Lark

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

Roach Perch Pike Dace Gudgeon 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 →