RiverFish

Roach · Rutilus rutilus

Roach in the River Thet

Largest measured roach: 33.3 cm

The largest roach measured in Environment Agency surveys of the River Thet was 33.3 cm, recorded at Bridgham Bridge on 28 January 1993.

Across 3,868 measured roach, the median measured length was 12.3 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 Thet.

See roach records across England →

Most recent observation22 October 2024Manor Farm Shropham · 3 fish
Largest measured roach
33.3 cm
Median length
12.3 cm
Fish measured
3,868
Survey locations
9

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
33.3 cm28 Jan 1993Bridgham Bridge30016
31.8 cm19 Jul 1988Larlingford30007
31 cm18 Oct 2018Thetford153873
30.8 cm15 Feb 1993Thetford30019
30.8 cm15 Feb 1993Thetford30019
30.8 cm15 Feb 1993Thetford30019
29.8 cm28 Jan 1993Bridgham Bridge30016
29.8 cm21 Jul 1988East Harling30008
28.8 cm18 Oct 2018Thetford153873
28.8 cm15 Feb 1993Thetford30019

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
Manor Farm Shropham22 Oct 202422 Oct 20241
Bridgham Bridge20 Jul 198819 Sept 20247
Snetterton Gravel Pits19 Jul 198818 Sept 20247
Thetford28 Jul 198818 Oct 20186
East Harling21 Jul 198827 Sept 20125
Thorpe Woodlands7 Feb 19977 Feb 19971
Kilverstone Estate29 Jul 198824 Nov 19953
Brettenham27 Jul 198823 Nov 19953
Larlingford19 Jul 198816 Nov 19953

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

1988–2024

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 3,868 measured fish were spread across different length ranges.

Smallest
3.8 cm
Lower quarter
8.3 cm
Median
12.3 cm
Upper quarter
16.3 cm
Largest
33.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Thet

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

Pike Gudgeon Perch Dace European eel Bullhead

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 →