RiverFish

Roach · Rutilus rutilus

Roach in the River Main Tamar

Largest measured roach: 19.8 cm

The largest roach measured in Environment Agency surveys of the River Main Tamar was 19.8 cm, recorded at Tamarstone on 25 August 2017.

Across 112 measured roach, the median measured length was 9.8 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 Main Tamar.

See roach records across England →

Most recent observation6 September 2022Dexbeer · 21 fish
Largest measured roach
19.8 cm
Median length
9.8 cm
Fish measured
112
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
19.8 cm25 Aug 2017Tamarstone151898
18 cm23 Jul 2008Tamarstone112129
17.8 cm25 Aug 2017Tamarstone151898
17.6 cm25 Aug 2017Tamarstone151898
17.4 cm23 Jul 2008Tamarstone112129
17 cm25 Aug 2017Tamarstone151898
16.8 cm25 Aug 2017Tamarstone151898
16.5 cm6 Sept 2022Dexbeer161869
16.5 cm13 Aug 2007Tamarstone106385
16.4 cm23 Jul 2008Tamarstone112129

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
Dexbeer1 Aug 19976 Sept 20229
Gunnislake Weir Index River Fish Trap22 May 201223 May 20186
Tamarstone11 Oct 199525 Aug 20177
Bridgerule21 Jun 20044 Aug 20105
North Tamerton25 Sept 19959 Aug 20063
Great Moreton9 Aug 20069 Aug 20061
Moreton Mill4 Jun 199317 Sept 19962
Crowford Bridge25 Sept 199525 Sept 19951

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

1993–2022

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 112 measured fish were spread across different length ranges.

Smallest
3.8 cm
Lower quarter
6.7 cm
Median
9.8 cm
Upper quarter
12.5 cm
Largest
19.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Tamar

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

Bullhead Stone loach Atlantic salmon Brown / sea trout Minnow European eel

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 →