RiverFish

Roach · Rutilus rutilus

Roach in the Bear Brook

Largest measured roach: 22.8 cm

The largest roach measured in Environment Agency surveys of the Bear Brook was 22.8 cm, recorded at Downstream Haydon Mill Farm on 11 September 2003.

Across 233 measured roach, the median measured length was 12.3 cm.

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

See roach records across England →

Most recent observation2 September 2025Downstream of Oakfield · 15 fish
Largest measured roach
22.8 cm
Median length
12.3 cm
Fish measured
233
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
22.8 cm11 Sept 2003Downstream Haydon Mill Farm77282
21.9 cm2 Sept 2025Downstream of Oakfield178295
21.6 cm2 Sept 2014Downstream Haydon Mill Farm142506
21.1 cm2 Sept 2014Downstream of Oakfield142505
20.7 cm2 Sept 2014Downstream of Oakfield142505
20.5 cm2 Sept 2014Downstream of Oakfield142505
20.3 cm11 Sept 2003Downstream Haydon Mill Farm77282
20.2 cm2 Sept 2014Downstream of Oakfield142505
19.7 cm8 Sept 2004Downstream Haydon Mill Farm82025
19.6 cm8 Sept 2004Downstream Haydon Mill Farm82025

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
Downstream of Oakfield2 Sept 20142 Sept 20252
Downstream Haydon Mill Farm11 Sept 20032 Sept 20143

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

2003–2025

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 233 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
11 cm
Median
12.3 cm
Upper quarter
15.1 cm
Largest
22.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Bear Brook

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

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 →