Roach · Rutilus rutilus

Roach in the River Adur West Arm

Largest measured roach: 32.8 cm

The largest roach measured in Environment Agency surveys of the River Adur West Arm was 32.8 cm, recorded at Lock Bridge on 8 September 2003.

Across 1,809 measured roach, the median measured length was 8 cm.

Surveyors recorded weights for 1,187 roach. The median was 0.3 oz (0.009 kg) and the largest recorded weight was 1 lb 5.2 oz (0.601 kg).

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

See roach records across England →

Most recent observation18 July 2024Lock Bridge · 82 fish

Largest measured roach: 32.8 cm
Median length: 8 cm
Fish measured: 1,809
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
32.8 cm	8 Sept 2003	Lock Bridge	76989
28.1 cm	8 Sept 2003	Lock Bridge	76989
25.5 cm	8 Sept 2003	Lock Bridge	76989
25.3 cm	9 Aug 2004	Tenchford Bridge	81332
24.3 cm	11 Sept 2007	Lock Bridge	107317
23.7 cm	4 Aug 2015	Lock Bridge	145759
23.2 cm	11 Sept 2007	Lock Bridge	107317
23 cm	8 Sept 2003	Lock Bridge	76989
22.4 cm	11 Sept 2007	Lock Bridge	107317
22.4 cm	19 Aug 2003	Tenchford Bridge	76912

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
Lock Bridge	4 Nov 1997	18 Jul 2024	14
West Grinstead	4 Sept 2014	4 Sept 2014	1
Capps Bridge	15 May 2014	15 May 2014	1
Tenchford Bridge	9 Feb 1998	15 Apr 2014	6
Bines Bridge	15 Oct 2013	15 Oct 2013	1
Slaughter Bridge	9 Sept 2002	7 Aug 2007	3

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

1997–2024

Survey records by year

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

197

198

099

000

001

202

303

204

205

206

207

108

109

110

011

112

113

314

115

016

017

118

019

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 1,809 measured fish were spread across different length ranges.

Smallest: 0.9 cm
Lower quarter: 6 cm
Median: 8 cm
Upper quarter: 10.6 cm
Largest: 32.8 cm

0–99 mm

1252

100–199 mm

531

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 1,187 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.1 oz (0.003 kg)
Median: 0.3 oz (0.009 kg)
Upper quarter: 0.7 oz (0.021 kg)
Heaviest: 1 lb 5.2 oz (0.601 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Adur West Arm

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

Pike European eel Perch Rudd Chub 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 →