Roach · Rutilus rutilus

Roach in the River Hiz

Largest measured roach: 31.3 cm

The largest roach measured in Environment Agency surveys of the River Hiz was 31.3 cm, recorded at Church End on 29 April 1998.

Across 1,013 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 Hiz.

See roach records across England →

Most recent observation25 May 2016Amenity Trees Arlesey · 32 fish

Largest measured roach: 31.3 cm
Median length: 12.3 cm
Fish measured: 1,013
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
31.3 cm	29 Apr 1998	Church End	29284
30.8 cm	19 Dec 1991	Arlesey Garden	29283
30.3 cm	29 Apr 1998	Church End	29284
30.3 cm	29 Apr 1998	Church End	29284
30.3 cm	19 Dec 1991	Arlesey Garden	29283
29.8 cm	19 Dec 1991	Arlesey Garden	29283
29.8 cm	19 Dec 1991	Arlesey Garden	29283
29.3 cm	29 Apr 1998	Church End	29284
29.3 cm	29 Apr 1998	Church End	29284
29.3 cm	19 Dec 1991	Arlesey Garden	29283

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
Amenity Trees Arlesey	6 Mar 2013	25 May 2016	2
Arlesey Garden	10 Mar 1989	25 May 1998	3
Church End	10 Mar 1989	29 Apr 1998	2

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

1989–2016

Survey records by year

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

289

090

191

092

093

094

095

096

097

298

099

000

001

002

003

004

005

006

007

008

009

010

011

012

113

014

015

116

Fish measured by surveyors

Measured length distribution

See how the 1,013 measured fish were spread across different length ranges.

Smallest: 3.8 cm
Lower quarter: 7.8 cm
Median: 12.3 cm
Upper quarter: 17.3 cm
Largest: 31.3 cm

0–99 mm

442

100–199 mm

397

200–299 mm

169

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Hiz

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

3-spined stickleback Bullhead Pike Stone loach Minnow Gudgeon

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 →