Bleak · Alburnus alburnus

Bleak in the River Mease

Largest measured bleak: 14.1 cm

The largest bleak measured in Environment Agency surveys of the River Mease was 14.1 cm, recorded at Croxall Bridge on 8 June 2005.

Across 38 measured bleak, the median measured length was 10 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 Mease.

See bleak records across England →

Most recent observation21 May 2026Netherseal · 4 fish

Largest measured bleak: 14.1 cm
Median length: 10 cm
Fish measured: 38
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
14.1 cm	8 Jun 2005	Croxall Bridge	84665
13.5 cm	11 Nov 1997	Croxall Bridge	4690
12.7 cm	8 Jun 2005	Croxall Bridge	84665
12.6 cm	18 Feb 2003	Edingale	74631
11.9 cm	21 May 2026	Netherseal	181472
11.6 cm	18 Feb 2003	Edingale	74631
11.5 cm	18 Feb 2003	Edingale	74631
11.1 cm	8 Jun 2005	Croxall Bridge	84665
11 cm	18 Feb 2003	Edingale	74631
10.9 cm	18 May 2006	Croxall Bridge	90777

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
Netherseal	16 Oct 2007	21 May 2026	2
Edingale	18 Feb 2003	18 Jun 2014	2
Croxall Bridge	11 Nov 1997	18 May 2006	3

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

1997–2026

Survey records by year

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

197

098

099

000

001

002

103

004

105

106

107

008

009

010

011

012

013

114

015

016

017

018

019

020

021

022

023

024

025

126

Fish measured by surveyors

Measured length distribution

See how the 38 measured fish were spread across different length ranges.

Smallest: 8.6 cm
Lower quarter: 9.4 cm
Median: 10 cm
Upper quarter: 10.8 cm
Largest: 14.1 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Mease

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

Stone loach Chub Perch Minnow Roach Bullhead

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 →