Bleak · Alburnus alburnus

Bleak in the River Stour

Largest measured bleak: 14.5 cm

The largest bleak measured in Environment Agency surveys of the River Stour was 14.5 cm, recorded at Clifford Chambers on 31 August 2017.

Across 43 measured bleak, the median measured length was 6.5 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 Stour.

See bleak records across England →

Most recent observation10 August 2023Clifford Chambers · 8 fish

Largest measured bleak: 14.5 cm
Median length: 6.5 cm
Fish measured: 43
Survey locations: 2

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
14.5 cm	31 Aug 2017	Clifford Chambers	151840
14 cm	31 Aug 2017	Clifford Chambers	151840
12.9 cm	10 Aug 2023	Clifford Chambers	163355
12.9 cm	10 Aug 2023	Clifford Chambers	163355
12.6 cm	10 Aug 2023	Clifford Chambers	163355
12.5 cm	11 Sept 2014	Clifford Chambers	142875
11.4 cm	9 Aug 2006	Preston	100531
11.3 cm	31 Aug 2017	Clifford Chambers	151840
11.2 cm	31 Aug 2017	Clifford Chambers	151840
11.1 cm	31 Aug 2017	Clifford Chambers	151840

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
Preston	9 Aug 2006	10 Aug 2023	2
Clifford Chambers	11 Sept 2014	10 Aug 2023	3

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

2006–2023

Survey records by year

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

106

007

008

009

010

011

012

013

114

015

016

117

018

019

020

021

022

223

Fish measured by surveyors

Measured length distribution

See how the 43 measured fish were spread across different length ranges.

Smallest: 3.2 cm
Lower quarter: 5 cm
Median: 6.5 cm
Upper quarter: 10.9 cm
Largest: 14.5 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Stour

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

Bullhead Chub Dace Minnow Stone loach 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 →