Roach · Rutilus rutilus

Roach in the Sankey Brook

Largest measured roach: 22.1 cm

The largest roach measured in Environment Agency surveys of the Sankey Brook was 22.1 cm, recorded at SA04(a) on 25 July 2000.

Across 95 measured roach, the median measured length was 9.3 cm.

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

See roach records across England →

Most recent observation14 May 2026Sasa03 · 2 fish

Largest measured roach: 22.1 cm
Median length: 9.3 cm
Fish measured: 95
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.

Length	Survey date	Survey location	Survey ID
22.1 cm	25 Jul 2000	SA04(a)	79746
22 cm	25 Jul 2000	SA04(a)	79746
17.1 cm	25 Jul 2000	SA04(a)	79746
16.3 cm	22 Jun 2005	Sasa05	85994
15 cm	25 Jul 2000	SA04(a)	79746
14.5 cm	22 Jun 2005	Sasa05	85994
13.1 cm	25 Jul 2000	SA04(a)	79746
12.4 cm	22 Jun 2005	Sasa05	85994
12.4 cm	22 Jun 2005	Sasa05	85994
12.2 cm	13 May 2026	Sabl05	181395

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
Sasa03	14 May 2026	14 May 2026	1
Sabl05	7 Jun 2000	13 May 2026	3
Sasa10	25 May 2023	25 May 2023	1
Sabl06	9 Oct 2013	9 Oct 2013	1
Sasa05	22 Jun 2005	22 Jun 2005	1
SA04(a)	25 Jul 2000	25 Jul 2000	1

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

2000–2026

Survey records by year

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

200

001

002

003

004

205

006

007

008

009

010

011

012

113

014

015

016

017

018

019

020

021

022

123

024

025

226

Fish measured by surveyors

Measured length distribution

See how the 95 measured fish were spread across different length ranges.

Smallest: 3.8 cm
Lower quarter: 7.6 cm
Median: 9.3 cm
Upper quarter: 10.5 cm
Largest: 22.1 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Sankey Brook

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

European eel Gudgeon Chub Dace 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 →