Roach · Rutilus rutilus

Roach in the River East Stour

Largest measured roach: 26.7 cm

The largest roach measured in Environment Agency surveys of the River East Stour was 26.7 cm, recorded at Mersham on 20 June 2024.

Across 387 measured roach, the median measured length was 11.8 cm.

Surveyors recorded weights for 73 roach. The median was 0.8 oz (0.023 kg) and the largest recorded weight was 4 oz (0.114 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 East Stour.

See roach records across England →

Most recent observation20 June 2024Mersham · 98 fish

Largest measured roach: 26.7 cm
Median length: 11.8 cm
Fish measured: 387
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.

Length	Survey date	Survey location	Survey ID
26.7 cm	20 Jun 2024	Mersham	165239
24.2 cm	20 Jun 2024	Mersham	165239
23.1 cm	20 Jun 2024	Mersham	165239
23 cm	20 Jun 2024	Mersham	165239
22.3 cm	19 Jun 2012	Mersham	132452
22 cm	6 Jun 2018	Mersham	152604
22 cm	6 Jun 2018	Mersham	152604
21.4 cm	19 Jun 2012	Mersham	132452
21.2 cm	6 Jun 2018	Mersham	152604
21 cm	6 Jun 2018	Mersham	152604

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 surveyed	First recorded	Last recorded	Visits finding roach
Mersham	9 Oct 2002	20 Jun 2024	5
Stour Centre	8 Aug 2006	18 Jul 2012	2
Evegate Mill	11 Oct 2002	11 Oct 2002	1

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

2002–2024

Survey records by year

Each bar shows how many survey visits recorded roach that year.

202

003

004

005

206

007

008

009

010

011

212

013

014

015

016

017

118

019

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 387 measured fish were spread across different length ranges.

Smallest: 4 cm
Lower quarter: 9.1 cm
Median: 11.8 cm
Upper quarter: 14.7 cm
Largest: 26.7 cm

0–99 mm

124

100–199 mm

247

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 73 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.002 kg)
Lower quarter: 0.2 oz (0.007 kg)
Median: 0.8 oz (0.023 kg)
Upper quarter: 1.1 oz (0.031 kg)
Heaviest: 4 oz (0.114 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 East Stour

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

European eel Stone loach Bullhead Gudgeon Minnow Perch

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 →