RiverFish

Bleak · Alburnus alburnus

Bleak in the River Kennet

Largest measured bleak: 18.2 cm

The largest bleak measured in Environment Agency surveys of the River Kennet was 18.2 cm, recorded at Burghfield on 7 November 2014.

Across 4,153 measured bleak, the median measured length was 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 Kennet.

See bleak records across England →

Most recent observation25 September 2025Northcroft - Eel · 6 fish
Largest measured bleak
18.2 cm
Median length
9 cm
Fish measured
4,153
Survey locations
27

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
18.2 cm7 Nov 2014Burghfield143968
17.3 cm22 Oct 2019Woolhampton - Salmon Cut.155820
17.2 cm3 Nov 2022Burghfield161893
17.1 cm22 Oct 2015Marsh Benham147365
17 cm26 Oct 2006Burghfield102463
16.9 cm24 Oct 2018Woolhampton - Salmon Cut.154061
16.5 cm22 Oct 2015Marsh Benham147365
16.2 cm28 Oct 2016Burghfield149964
16.2 cm25 Oct 2010Northcroft Recreation Centre- West Mills125414
16.1 cm24 Oct 2012Woolhampton - Salmon Cut.134886

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
Northcroft - Eel25 Sept 202525 Sept 20251
Northcroft Recreation Centre- West Mills21 Oct 200415 Nov 202410
Woolhampton - Salmon Cut.3 Apr 200313 Nov 202416
Burghfield27 Oct 200412 Nov 202417
Foudry Brook to County Weir16 Apr 200311 Nov 202417
Osier Bed Stream - Eel6 Oct 202320 Sept 20242
Salmon Cut4 Nov 20084 Nov 202210
Fobney -Foudry Brook10 Apr 200328 Oct 201811
Gaston Lock - Burghfield Mill9 Apr 200327 Oct 201811
Marsh Benham3 Nov 200822 Oct 20152
Lower Benyons27 Oct 200416 Oct 20157
Hambridge31 Oct 20068 Oct 20152
Shenfield by-pass channel18 Sept 201518 Sept 20151
Disused Railway Bridge at Thatcham5 Nov 20145 Nov 20141
Padworth Back Channel9 Oct 20149 Oct 20141
Bulls lock- Widmead lock21 Oct 200430 Oct 20128
Fobney Island16 Mar 201116 Mar 20111
Osier Bed Stream28 Sept 200411 Nov 20092
Fobney to County Weir13 Apr 200316 Oct 20085
Blakes lock to confluence with Thames22 Jul 200822 Jul 20081
Speen Moor23 Oct 200623 Oct 20061
Kings bridge - Brimpton3 Nov 200427 Oct 20052
Aldershot Stream14 Nov 200320 Oct 20053
Ufton to Tyle mill8 Apr 200318 Oct 20053
Waterside Farm13 Oct 200513 Oct 20051
Upper Benyons11 Nov 200411 Nov 20041
Padworth Mill - Padworth Bridge26 Oct 200426 Oct 20041

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

2003–2025

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 4,153 measured fish were spread across different length ranges.

Smallest
1.1 cm
Lower quarter
6.8 cm
Median
9 cm
Upper quarter
11 cm
Largest
18.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Kennet

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

Pike Brown / sea trout Chub Dace Perch 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 →