Bleak · Alburnus alburnus

Bleak in the Kings Dyke

Largest measured bleak: 16.3 cm

The largest bleak measured in Environment Agency surveys of the Kings Dyke was 16.3 cm, recorded at Ashline Lock on 20 April 1990.

Across 243 measured bleak, the median measured length was 10.3 cm.

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

See bleak records across England →

Most recent observation14 October 2025Whittlesey · 1 fish

Largest measured bleak: 16.3 cm
Median length: 10.3 cm
Fish measured: 243
Survey locations: 4

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
16.3 cm	20 Apr 1990	Ashline Lock	29575
16 cm	11 Jul 2011	Whittlesey	126889
15.3 cm	18 Apr 1990	Horsey Toll	29572
14.8 cm	18 Jun 1991	Ashline Lock	29579
14.3 cm	24 Jun 1991	Horsey Toll	29576
14.3 cm	18 Jun 1991	Ashline Lock	29579
14.3 cm	18 Jun 1991	Ashline Lock	29579
13.8 cm	23 Jun 1994	Whittlesey	29582
13.8 cm	18 Jun 1991	Ashline Lock	29579
13.8 cm	18 Jun 1991	Ashline Lock	29579

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
Whittlesey	19 Apr 1990	14 Oct 2025	6
Horsey Toll	11 May 1987	23 Jun 2006	5
Ashline Lock	20 Apr 1990	22 Jun 1994	3
Fields End Bridge	15 May 1987	19 Jun 1991	3

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

1987–2025

Survey records by year

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

287

088

089

490

491

092

093

394

095

096

097

098

099

000

001

002

003

004

005

206

007

008

009

010

111

012

013

014

015

016

017

018

019

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 243 measured fish were spread across different length ranges.

Smallest: 5.9 cm
Lower quarter: 9.3 cm
Median: 10.3 cm
Upper quarter: 11.3 cm
Largest: 16.3 cm

0–99 mm

106

100–199 mm

137

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Kings Dyke

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

Perch Pike Roach Common bream Silver bream Ruffe

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 →