RiverFish

Roach · Rutilus rutilus

Roach in the River Wensum (upper)

Largest measured roach: 26.3 cm

The largest roach measured in Environment Agency surveys of the River Wensum (upper) was 26.3 cm, recorded at Upstream Fakenham Mill on 17 April 2015.

Across 715 measured roach, the median measured length was 15.4 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 Wensum (upper).

See roach records across England →

Most recent observation2 September 2025Upstream Fakenham Mill · 78 fish
Largest measured roach
26.3 cm
Median length
15.4 cm
Fish measured
715
Survey locations
3

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
26.3 cm17 Apr 2015Upstream Fakenham Mill144946
26.2 cm3 Sept 2024Upstream Fakenham Mill167171
25.7 cm3 Sept 2024Upstream Fakenham Mill167171
24.7 cm12 Sept 2012Upstream Fakenham Mill133558
24.6 cm17 Apr 2015Upstream Fakenham Mill144946
24.5 cm3 Sept 2024Upstream Fakenham Mill167171
24.4 cm6 Aug 2013Upstream Fakenham Mill137745
24.4 cm23 Oct 2009Upstream Fakenham Mill119788
24.3 cm26 Apr 2022Upstream Fakenham Mill160987
24 cm26 Apr 2022Upstream Fakenham Mill160987

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
Upstream Fakenham Mill21 Apr 19942 Sept 202514
Fakenham Common2 Jul 199014 Jun 20189
Upstream Broomsthorpe Bridge27 Feb 198627 Feb 19861

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

1986–2025

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 715 measured fish were spread across different length ranges.

Smallest
2.7 cm
Lower quarter
12.4 cm
Median
15.4 cm
Upper quarter
18.2 cm
Largest
26.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Wensum (upper)

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

Brown / sea trout Stone loach Bullhead European eel 3-spined stickleback Brook lamprey

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 →