Roach · Rutilus rutilus

Roach in the River Itchen

Largest measured roach: 22 cm

The largest roach measured in Environment Agency surveys of the River Itchen was 22 cm, recorded at Blackbridge on 2 September 2002.

Across 15 measured roach, the median measured length was 15.9 cm.

Surveyors recorded weights for 11 roach. The median was 4.1 oz (0.116 kg) and the largest recorded weight was 8.1 oz (0.23 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 Itchen.

See roach records across England →

Most recent observation22 August 2019Wolvesey Lodge · 3 fish

Largest measured roach: 22 cm
Median length: 15.9 cm
Fish measured: 15
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 cm	2 Sept 2002	Blackbridge	55066
19.7 cm	2 Sept 2002	Blackbridge	55066
19.3 cm	2 Sept 2002	Blackbridge	55066
18.9 cm	2 Sept 2002	Blackbridge	55066
18.7 cm	7 Sept 2004	Lower Itchen Fishery - Allington Stream	82054
18.6 cm	2 Sept 2002	Blackbridge	55066
18.5 cm	2 Sept 2002	Blackbridge	55066
15.9 cm	2 Sept 2002	Blackbridge	55066
15.1 cm	2 Sept 2002	Blackbridge	55066
14.5 cm	24 Oct 2018	Abbots Worthy, Rochienne's d/s offtake	153926

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
Wolvesey Lodge	22 Aug 2019	22 Aug 2019	1
Abbots Worthy, Rochienne's d/s offtake	24 Oct 2018	24 Oct 2018	1
Lower Itchen Fishery - Allington Stream	7 Sept 2004	7 Sept 2004	1
Bishopstoke Lock	2 Sept 2003	2 Sept 2003	1
Shawford, downtream of Norris's Bridge	24 Sept 2002	24 Sept 2002	1
Blackbridge	2 Sept 2002	2 Sept 2002	1

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

2002–2019

Survey records by year

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

202

103

104

005

006

007

008

009

010

011

012

013

014

015

016

017

118

119

Fish measured by surveyors

Measured length distribution

See how the 15 measured fish were spread across different length ranges.

Smallest: 8.3 cm
Lower quarter: 12.6 cm
Median: 15.9 cm
Upper quarter: 18.8 cm
Largest: 22 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 11 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.3 oz (0.008 kg)
Lower quarter: 2.3 oz (0.0645 kg)
Median: 4.1 oz (0.116 kg)
Upper quarter: 4.4 oz (0.125 kg)
Heaviest: 8.1 oz (0.23 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 Itchen

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

Brown / sea trout Bullhead Minnow European eel Atlantic salmon Grayling

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 →