Bleak · Alburnus alburnus

Bleak in the Main River Tone

Largest measured bleak: 17.5 cm

The largest bleak measured in Environment Agency surveys of the Main River Tone was 17.5 cm, recorded at Bathpool on 28 July 2011.

Across 376 measured bleak, the median measured length was 8.8 cm.

Surveyors recorded weights for 2 bleak. The median was 0.6 oz (0.016 kg) and the largest recorded weight was 0.8 oz (0.024 kg).

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

See bleak records across England →

Most recent observation19 September 2024Bathpool · 41 fish

Largest measured bleak: 17.5 cm
Median length: 8.8 cm
Fish measured: 376
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
17.5 cm	28 Jul 2011	Bathpool	127255
16 cm	19 Sept 2024	Bathpool	167170
14.6 cm	14 Apr 2015	Newbridge	144542
14.5 cm	25 Apr 2019	Newbridge	154431
14.2 cm	14 Apr 2015	Newbridge	144542
14.2 cm	28 Jul 2011	Bathpool	127255
14.2 cm	7 Oct 2009	Priorswood (Te)	119247
14 cm	19 Sept 2024	Bathpool	167170
13.9 cm	20 Apr 2010	Newbridge	121402
13.7 cm	28 Jul 2011	Bathpool	127255

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
Bathpool	1 Sept 2009	19 Sept 2024	8
Newbridge	26 Apr 2007	25 Apr 2019	5
Priorswood (Te)	7 Oct 2009	7 Oct 2009	1

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

2007–2024

Survey records by year

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

107

008

309

210

111

012

113

114

115

016

117

018

219

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 376 measured fish were spread across different length ranges.

Smallest: 4.9 cm
Lower quarter: 8 cm
Median: 8.8 cm
Upper quarter: 10.5 cm
Largest: 17.5 cm

0–99 mm

248

100–199 mm

128

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 2 bleak. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.3 oz (0.008 kg)
Lower quarter: 0.4 oz (0.012 kg)
Median: 0.6 oz (0.016 kg)
Upper quarter: 0.7 oz (0.02 kg)
Heaviest: 0.8 oz (0.024 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Main River Tone

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

Brown / sea trout Bullhead European eel Stone loach Minnow Atlantic salmon

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 →