Bleak · Alburnus alburnus

Bleak in the River Ely Ouse

Largest measured bleak: 17.3 cm

The largest bleak measured in Environment Agency surveys of the River Ely Ouse was 17.3 cm, recorded at Queen Adelaide on 4 August 2000.

Across 378 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 River Ely Ouse.

See bleak records across England →

Most recent observation10 October 2023Little Thetford · 19 fish

Largest measured bleak: 17.3 cm
Median length: 10.8 cm
Fish measured: 378
Survey locations: 8

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
17.3 cm	4 Aug 2000	Queen Adelaide	30841
16.3 cm	11 Aug 2000	Plantation House	30844
15.3 cm	4 Aug 2000	Queen Adelaide	30841
15 cm	31 Aug 2005	Little Thetford	85924
14.8 cm	2 Aug 2000	Little Thetford	30839
14.8 cm	20 Aug 1996	Branch Bridge	29959
14.7 cm	30 Sept 2010	Sandhill Bridge	124101
14.2 cm	9 Sept 2011	Ten Mile Bank	127854
14.1 cm	7 Sept 2011	Sandhill Bridge	127755
14 cm	31 Aug 2005	Little Thetford	85924

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
Little Thetford	12 Aug 1996	10 Oct 2023	9
Sandhill Bridge	23 Sept 2003	19 Sept 2023	9
Ten Mile Bank	15 Aug 2000	9 Sept 2011	4
Branch Bridge	20 Aug 1996	12 Sept 2006	3
Queen Adelaide	4 Aug 2000	11 Sept 2006	5
Ely High Bridge	8 Sept 2006	8 Sept 2006	1
Plantation House	23 Aug 1996	11 Aug 2000	2
Brandon Creek	27 Sept 1990	27 Sept 1990	1

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

1990–2023

Survey records by year

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

190

091

092

093

094

095

396

097

098

099

500

001

002

303

204

405

406

207

208

209

210

211

012

013

014

015

016

017

018

019

020

021

022

223

Fish measured by surveyors

Measured length distribution

See how the 378 measured fish were spread across different length ranges.

Smallest: 5.5 cm
Lower quarter: 9.8 cm
Median: 10.8 cm
Upper quarter: 11.8 cm
Largest: 17.3 cm

0–99 mm

110

100–199 mm

268

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ely Ouse

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

Perch Roach Common bream Ruffe Pike Zander

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 →