RiverFish

Bleak · Alburnus alburnus

Bleak in the River Lymn FMU

Largest measured bleak: 18 cm

The largest bleak measured in Environment Agency surveys of the River Lymn FMU was 18 cm, recorded at Stockwith Mill on 18 July 2024.

Across 194 measured bleak, the median measured length was 11 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 Lymn FMU.

See bleak records across England →

Most recent observation7 November 2025Mill Bridge · 3 fish
Largest measured bleak
18 cm
Median length
11 cm
Fish measured
194
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.

LengthSurvey dateSurvey locationSurvey ID
18 cm18 Jul 2024Stockwith Mill166213
15 cm19 Jul 2024Mill Bridge166215
13.9 cm6 Jun 2005Mill Bridge84872
13.9 cm14 May 2003Mill Bridge78636
13.8 cm19 Jul 2024Mill Bridge166215
13.8 cm6 Jun 2005Mill Bridge84872
13.7 cm6 Jun 2024Partney Bridge166221
13.7 cm31 Jul 2012Mill Bridge132824
13.4 cm6 Jun 2024Partney Bridge166221
13.4 cm31 Jul 2012Mill Bridge132824

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
Mill Bridge29 Apr 20027 Nov 20259
Stockwith Mill18 Jul 202418 Jul 20241
Partney Bridge6 Jun 20246 Jun 20241

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

2002–2025

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 194 measured fish were spread across different length ranges.

Smallest
5.2 cm
Lower quarter
10.2 cm
Median
11 cm
Upper quarter
11.9 cm
Largest
18 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Lymn FMU

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

Bullhead Brown / sea trout European eel 3-spined stickleback Roach Perch

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 →