RiverFish

Bleak · Alburnus alburnus

Bleak in the River Monkey island

Largest measured bleak: 15.2 cm

The largest bleak measured in Environment Agency surveys of the River Monkey island was 15.2 cm, recorded at Monkey Island Downstream Fry on 20 August 2012.

Across 373 measured bleak, the median measured length was 10.7 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 Monkey island.

See bleak records across England →

Most recent observation20 August 2018Monkey Island Downstream Fry · 1 fish
Largest measured bleak
15.2 cm
Median length
10.7 cm
Fish measured
373
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.

LengthSurvey dateSurvey locationSurvey ID
15.2 cm20 Aug 2012Monkey Island Downstream Fry135294
14.5 cm18 Aug 2015Monkey Island Upstream Fry146040
14.3 cm18 Aug 2015Monkey Island Upstream Fry146040
14.2 cm18 Aug 2015Monkey Island Upstream Fry146040
14 cm18 Aug 2015Monkey Island Upstream Fry146040
14 cm18 Aug 2015Monkey Island Upstream Fry146040
14 cm18 Aug 2015Monkey Island Upstream Fry146040
13.8 cm18 Aug 2015Monkey Island Upstream Fry146040
13.6 cm18 Aug 2015Monkey Island Upstream Fry146040
13.5 cm18 Aug 2015Monkey Island Upstream Fry146040

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 surveyedFirst recordedLast recordedVisits finding bleak
Monkey Island Upstream Fry1 Sept 200620 Aug 20188
Monkey Island Downstream Fry20 Aug 200720 Aug 20185

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

2006–2018

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 373 measured fish were spread across different length ranges.

Smallest
1.2 cm
Lower quarter
3.5 cm
Median
10.7 cm
Upper quarter
11.5 cm
Largest
15.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Monkey island

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

Perch Chub Roach Dace Gudgeon Minnow

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 →