RiverFish

Roach · Rutilus rutilus

Roach in the River Devon

Largest measured roach: 24.9 cm

The largest roach measured in Environment Agency surveys of the River Devon was 24.9 cm, recorded at Cottam Gauging Station on 5 May 1995.

Across 373 measured roach, the median measured length was 11.6 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 Devon.

See roach records across England →

Most recent observation6 August 2025Cottam Gauging Station · 18 fish
Largest measured roach
24.9 cm
Median length
11.6 cm
Fish measured
373
Survey locations
6

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
24.9 cm5 May 1995Cottam Gauging Station24403
24.2 cm6 Aug 2025Cottam Gauging Station178217
23.5 cm18 May 1999Cottam Gauging Station23486
23.1 cm18 May 1999Cottam Gauging Station23486
21.6 cm5 May 1995Cottam Gauging Station24403
21 cm5 May 1995Cottam Gauging Station24403
20.1 cm2 Jun 2015Cottam Gauging Station145263
19.8 cm5 May 1995Cottam Gauging Station24403
19.3 cm6 Aug 2025Cottam Gauging Station178217
19.2 cm6 Aug 2025Cottam Gauging Station178217

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
Cottam Gauging Station5 May 19956 Aug 20257
Bottesford12 Jun 201321 Jun 20172
Grange Farm2 Sept 20112 Sept 20111
Queens Sconce29 Jun 201129 Jun 20111
Staunton in the Vale24 May 201124 May 20111
Hawton19 Feb 199828 Aug 20093

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

1995–2025

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 373 measured fish were spread across different length ranges.

Smallest
2.9 cm
Lower quarter
8.3 cm
Median
11.6 cm
Upper quarter
14.2 cm
Largest
24.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Devon

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

European eel 3-spined stickleback Bullhead Stone loach 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 →