Roach · Rutilus rutilus

Roach in the Harpers Brook

Largest measured roach: 29.5 cm

The largest roach measured in Environment Agency surveys of the Harpers Brook was 29.5 cm, recorded at Lowick on 18 February 1992.

Across 170 measured roach, the median measured length was 13.3 cm.

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

See roach records across England →

Most recent observation9 April 2015Lowick · 4 fish

Largest measured roach: 29.5 cm
Median length: 13.3 cm
Fish measured: 170
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
29.5 cm	18 Feb 1992	Lowick	54429
27 cm	6 Mar 1989	Lowick	54425
27 cm	6 Mar 1989	Lowick	54425
26 cm	6 Mar 1989	Lowick	54425
24 cm	6 Mar 1989	Lowick	54425
24 cm	6 Mar 1989	Lowick	54425
23.5 cm	6 Mar 1989	Lowick	54425
22 cm	21 Feb 1992	Downstream Islip Gauging Weir	54430
22 cm	6 Mar 1989	Lowick	54425
21.7 cm	9 Apr 2015	Lowick	145355

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
Lowick	6 Mar 1989	9 Apr 2015	3
Downstream Islip Gauging Weir	1 Mar 1989	4 Apr 2006	5
Riffle (Harpers Brook TNR)	23 Mar 1995	23 Mar 1995	1
Stanion	13 Mar 1995	13 Mar 1995	1
Pool 2 (Harpers Brook TNR)	13 Mar 1995	13 Mar 1995	1
Pool 1 (Harpers Brook TNR)	13 Mar 1995	13 Mar 1995	1

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

1989–2015

Survey records by year

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

289

090

091

292

093

094

595

096

097

098

099

100

001

002

003

004

005

106

007

008

009

010

011

012

013

014

115

Fish measured by surveyors

Measured length distribution

See how the 170 measured fish were spread across different length ranges.

Smallest: 6 cm
Lower quarter: 11 cm
Median: 13.3 cm
Upper quarter: 16 cm
Largest: 29.5 cm

0–99 mm

100–199 mm

122

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Harpers Brook

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

Minnow Bullhead Chub Dace Stone loach Brown / sea trout

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 →