Roach · Rutilus rutilus

Roach in the Basingstoke Canal

Largest measured roach: 24.6 cm

The largest roach measured in Environment Agency surveys of the Basingstoke Canal was 24.6 cm, recorded at Goldsworth Park Lake on 9 October 2012.

Across 2,493 measured roach, the median measured length was 3.2 cm.

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

See roach records across England →

Most recent observation9 October 2012Goldsworth Park Lake · 174 fish

Largest measured roach: 24.6 cm
Median length: 3.2 cm
Fish measured: 2,493
Survey locations: 9

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
24.6 cm	9 Oct 2012	Goldsworth Park Lake	134202
24.5 cm	9 Oct 2012	Goldsworth Park Lake	134202
22.7 cm	9 Oct 2012	Goldsworth Park Lake	134202
22.7 cm	9 Oct 2012	Goldsworth Park Lake	134202
22.2 cm	9 Oct 2012	Goldsworth Park Lake	134202
22.1 cm	9 Oct 2012	Goldsworth Park Lake	134202
21.7 cm	9 Oct 2012	Goldsworth Park Lake	134202
21.5 cm	9 Oct 2012	Goldsworth Park Lake	134202
21 cm	9 Oct 2012	Goldsworth Park Lake	134202
20.8 cm	9 Oct 2012	Goldsworth Park Lake	134202

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
Goldsworth Park Lake	9 Oct 2012	9 Oct 2012	1
Mytchett Lake	6 Aug 2004	6 Aug 2004	1
Great Bottom Flash	6 Aug 2004	6 Aug 2004	1
Eelmoor Flash	5 Aug 2004	5 Aug 2004	1
Ash Lock	5 Aug 2004	5 Aug 2004	1
Fleet	4 Aug 2004	4 Aug 2004	1
Dogmersfield	4 Aug 2004	4 Aug 2004	1
Greywell	3 Aug 2004	3 Aug 2004	1
Colt Hill Bridge, Odiham	3 Aug 2004	3 Aug 2004	1

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

2004–2012

Survey records by year

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

804

005

006

007

008

009

010

011

112

Fish measured by surveyors

Measured length distribution

See how the 2,493 measured fish were spread across different length ranges.

Smallest: 1.3 cm
Lower quarter: 2.2 cm
Median: 3.2 cm
Upper quarter: 7.5 cm
Largest: 24.6 cm

0–99 mm

2200

100–199 mm

280

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Basingstoke Canal

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

Perch Common bream Pike Rudd Tench

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 →