Bleak · Alburnus alburnus

Bleak in the Jubilee River

Largest measured bleak: 13 cm

The largest bleak measured in Environment Agency surveys of the Jubilee River was 13 cm, recorded at Conservation Section No 1 (DS) on 28 August 2007.

Across 867 measured bleak, the median measured length was 3.6 cm.

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

See bleak records across England →

Most recent observation23 August 2013Taplow · 85 fish

Largest measured bleak: 13 cm
Median length: 3.6 cm
Fish measured: 867
Survey locations: 6

Individual EA measurements

Largest measured bleak

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

Length	Survey date	Survey location	Survey ID
13 cm	28 Aug 2007	Conservation Section No 1 (DS)	108097
12.4 cm	23 Aug 2013	Taplow	138209
12.2 cm	28 Aug 2007	Conservation Section No 1 (DS)	108097
11.4 cm	28 Aug 2007	Conservation Section No 2 (US)	108101
11.3 cm	28 Aug 2007	Conservation Section No 1 (DS)	108097
11.2 cm	28 Aug 2007	Conservation Section No 1 (DS)	108097
11 cm	28 Aug 2007	Conservation Section No 2 (US)	108101
10.8 cm	28 Aug 2007	Conservation Section No 1 (DS)	108097
10.7 cm	28 Aug 2007	Conservation Section No 1 (DS)	108097
10.6 cm	28 Aug 2007	Conservation Section No 1 (DS)	108097

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 surveyed	First recorded	Last recorded	Visits finding bleak
Taplow	26 Sept 2002	23 Aug 2013	7
Conservation Section No 1 (DS)	28 Aug 2007	21 Aug 2013	3
Upstream of Slough Weir	26 Aug 2002	26 Aug 2009	3
Conservation Section No 2 (US)	28 Aug 2007	26 Aug 2008	2
Eton Far Shore	29 Aug 2007	29 Aug 2007	1
Black Potts	19 Jul 2005	19 Jul 2005	1

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

2002–2013

Survey records by year

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

202

003

104

205

006

507

208

209

110

011

012

213

Fish measured by surveyors

Measured length distribution

See how the 867 measured fish were spread across different length ranges.

Smallest: 1.6 cm
Lower quarter: 3.2 cm
Median: 3.6 cm
Upper quarter: 4.1 cm
Largest: 13 cm

0–99 mm

823

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Jubilee River

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

3-spined stickleback Gudgeon Perch Stone loach Roach 10-spined stickleback

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 →