RiverFish

Roach · Rutilus rutilus

Roach in the River Duston Branch

Largest measured roach: 34.3 cm

The largest roach measured in Environment Agency surveys of the River Duston Branch was 34.3 cm, recorded at Upton Mill on 6 September 1989.

Across 1,870 measured roach, the median measured length was 13.2 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 Duston Branch.

See roach records across England →

Most recent observation8 June 2018Nether Heyford · 31 fish
Largest measured roach
34.3 cm
Median length
13.2 cm
Fish measured
1,870
Survey locations
8

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
34.3 cm6 Sept 1989Upton Mill54110
33.5 cm7 Oct 1998Kislingbury54139
33.5 cm3 Nov 1995Kislingbury54128
32.5 cm3 Nov 1995Kislingbury54128
32.3 cm6 Sept 1989Upton Mill54110
32 cm3 Nov 1995Kislingbury54128
31.3 cm6 Sept 1989Upton Mill54110
30.3 cm6 Sept 1989Upton Mill54110
29.3 cm6 Sept 1989Upton Mill54110
28.8 cm6 Sept 1989Upton Mill54110

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
Nether Heyford5 Sept 19898 Jun 20184
Duston Mill22 Oct 199819 Oct 20112
St James Mill Weir Upstream10 Aug 200910 Aug 20091
St James Mill Weir Downstream10 Aug 200910 Aug 20091
Brockhall16 Nov 199525 Jul 20013
Kislingbury5 Sept 19897 Oct 19984
Dodford30 Aug 198910 Sept 19982
Upton Mill6 Sept 19897 Nov 19953

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

1989–2018

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 1,870 measured fish were spread across different length ranges.

Smallest
2.8 cm
Lower quarter
8.5 cm
Median
13.2 cm
Upper quarter
17.5 cm
Largest
34.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Duston Branch

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

Bullhead Brown / sea trout Pike Perch Minnow 3-spined stickleback

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 →