Bleak · Alburnus alburnus

Bleak in the River Duke of Northumberland

Largest measured bleak: 13.4 cm

The largest bleak measured in Environment Agency surveys of the River Duke of Northumberland was 13.4 cm, recorded at Mill Platt on 6 October 2005.

Across 18 measured bleak, the median measured length was 8.4 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 Duke of Northumberland.

See bleak records across England →

Most recent observation19 October 2023Hatton Road · 1 fish

Largest measured bleak: 13.4 cm
Median length: 8.4 cm
Fish measured: 18
Survey locations: 3

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
13.4 cm	6 Oct 2005	Mill Platt	86646
13.1 cm	6 Oct 2005	Mill Platt	86646
12.5 cm	6 Oct 2005	Mill Platt	86646
12 cm	6 Oct 2005	Mill Platt	86646
11.8 cm	19 May 2005	Moor Lane	84805
11.7 cm	6 May 2010	Moor Lane	121480
11.6 cm	6 Oct 2005	Mill Platt	86646
10.1 cm	6 Oct 2005	Mill Platt	86646
8.5 cm	19 May 2005	Moor Lane	84805
8.3 cm	6 Oct 2005	Mill Platt	86646

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
Hatton Road	19 Oct 2023	19 Oct 2023	1
Moor Lane	15 Jun 2000	5 Sept 2017	4
Mill Platt	6 Oct 2005	6 Oct 2005	1

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

2000–2023

Survey records by year

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

100

001

002

003

004

205

006

007

008

009

110

011

012

013

014

015

016

117

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 18 measured fish were spread across different length ranges.

Smallest: 5.7 cm
Lower quarter: 7 cm
Median: 8.4 cm
Upper quarter: 11.8 cm
Largest: 13.4 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Duke of Northumberland

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

Chub Gudgeon Roach Minnow Stone loach European eel

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 →