Roach · Rutilus rutilus

Roach in the Ash Brook

Largest measured roach: 22.2 cm

The largest roach measured in Environment Agency surveys of the Ash Brook was 22.2 cm, recorded at As02 on 14 September 1999.

Across 251 measured roach, the median measured length was 10.9 cm.

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

See roach records across England →

Most recent observation17 August 2023Weas05 · 59 fish

Largest measured roach: 22.2 cm
Median length: 10.9 cm
Fish measured: 251
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
22.2 cm	14 Sept 1999	As02	60602
21.5 cm	14 Sept 1999	As02	60602
21.3 cm	14 Sept 1999	As02	60602
20.9 cm	10 May 2011	Weas15	126908
20.2 cm	14 Oct 1999	As02	60620
19.8 cm	26 Jun 2006	Weas15	100845
19.7 cm	14 Sept 1999	As02	60602
19.4 cm	17 Aug 2023	Weas05	163542
18.2 cm	23 Jun 2006	Weas10	100844
18 cm	17 Aug 2023	Weas05	163542

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
Weas05	23 Jun 2006	17 Aug 2023	4
Weas15	26 Jun 2006	10 May 2011	2
Weas10	23 Jun 2006	23 Jun 2006	1
As03	20 Oct 1999	20 Oct 1999	1
As04	14 Oct 1999	14 Oct 1999	1
As02	14 Sept 1999	14 Oct 1999	2

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

1999–2023

Survey records by year

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

499

000

001

002

003

004

005

306

007

008

009

010

211

012

013

014

115

016

017

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 251 measured fish were spread across different length ranges.

Smallest: 3.3 cm
Lower quarter: 9.4 cm
Median: 10.9 cm
Upper quarter: 12.9 cm
Largest: 22.2 cm

0–99 mm

100–199 mm

160

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Ash Brook

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

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 →