RiverFish

Roach · Rutilus rutilus

Roach in the River Laleham Abbey

Largest measured roach: 18.7 cm

The largest roach measured in Environment Agency surveys of the River Laleham Abbey was 18.7 cm, recorded at Laleham Abbey Upstream Fry on 22 August 2012.

Across 1,679 measured roach, the median measured length was 4.2 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 Laleham Abbey.

See roach records across England →

Most recent observation20 August 2024Laleham Abbey Downstream Fry · 2 fish
Largest measured roach
18.7 cm
Median length
4.2 cm
Fish measured
1,679
Survey locations
2

Individual EA measurements

Largest measured roach

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
18.7 cm22 Aug 2012Laleham Abbey Upstream Fry135275
17.8 cm22 Aug 2007Laleham Abbey Downstream Fry108632
17.3 cm22 Aug 2007Laleham Abbey Downstream Fry108632
17.2 cm22 Aug 2007Laleham Abbey Downstream Fry108632
17.2 cm22 Aug 2007Laleham Abbey Upstream Fry108629
17.1 cm22 Aug 2007Laleham Abbey Downstream Fry108632
16.9 cm26 Aug 2016Laleham Abbey Upstream Fry149238
16.7 cm22 Aug 2007Laleham Abbey Downstream Fry108632
16.7 cm22 Aug 2007Laleham Abbey Downstream Fry108632
16.6 cm22 Aug 2007Laleham Abbey Upstream Fry108629

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where roach were found

Each point marks a survey location with at least one roach 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 roach
Laleham Abbey Downstream Fry27 Aug 200320 Aug 202416
Laleham Abbey Upstream Fry27 Aug 200321 Aug 201816

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

2003–2024

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 1,679 measured fish were spread across different length ranges.

Smallest
1.1 cm
Lower quarter
3.8 cm
Median
4.2 cm
Upper quarter
4.8 cm
Largest
18.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Laleham Abbey

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

Gudgeon Bleak Chub Dace Perch 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 →