RiverFish

Roach · Rutilus rutilus

Roach in the River Churn

Largest measured roach: 28.3 cm

The largest roach measured in Environment Agency surveys of the River Churn was 28.3 cm, recorded at River Churn - South Cerney Outdoor Education Centr on 9 May 2002.

Across 510 measured roach, the median measured length was 11.3 cm.

Surveyors recorded weights for 112 roach. The median was 1.1 oz (0.032 kg) and the largest recorded weight was 8.4 oz (0.238 kg).

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

See roach records across England →

Most recent observation29 April 2025South Cerney - behind outdoor education centre · 3 fish
Largest measured roach
28.3 cm
Median length
11.3 cm
Fish measured
510
Survey locations
5

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
28.3 cm9 May 2002River Churn - South Cerney Outdoor Education Centr72788
24.9 cm16 Apr 2015River Churn - South Cerney Outdoor Education Centr144563
24.5 cm9 May 2002River Churn - South Cerney Outdoor Education Centr72788
24.3 cm9 May 2002River Churn - South Cerney Outdoor Education Centr72788
24.2 cm15 Oct 2005River Churn - South Cerney Outdoor Education Centr129919
23.8 cm16 Apr 2015River Churn - South Cerney Outdoor Education Centr144563
23.4 cm9 May 2002River Churn - South Cerney Outdoor Education Centr72788
23.3 cm10 Oct 2004River Churn - South Cerney Outdoor Education Centr83105
23.3 cm28 Apr 2003River Churn - South Cerney Outdoor Education Centr78435
23.3 cm9 May 2002River Churn - Cerney Wick73271

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
South Cerney - behind outdoor education centre29 Apr 202529 Apr 20251
River Churn - South Cerney Outdoor Education Centr6 Nov 200116 Apr 20158
River Churn - Cerney Wick9 May 200216 Apr 201511
River Churn - Perrot's Brook11 Oct 200411 Oct 20041
River Churn - Upstream Thames Confluence23 Mar 200423 Mar 20041

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

2001–2025

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 510 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
8.1 cm
Median
11.4 cm
Upper quarter
17 cm
Largest
28.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 112 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.1 oz (0.003 kg)
Lower quarter
0.5 oz (0.0138 kg)
Median
1.1 oz (0.032 kg)
Upper quarter
2.5 oz (0.0718 kg)
Heaviest
8.4 oz (0.238 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Churn

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

Brown / sea trout Bullhead Minnow Pike Perch Chub

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 →