RiverFish

Roach · Rutilus rutilus

Roach in the River Adur East Arm

Largest measured roach: 30 cm

The largest roach measured in Environment Agency surveys of the River Adur East Arm was 30 cm, recorded at Nymans Farm, Shermanbury on 6 September 2018.

Across 2,517 measured roach, the median measured length was 9 cm.

Surveyors recorded weights for 1,164 roach. The median was 0.5 oz (0.013 kg) and the largest recorded weight was 10 oz (0.283 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 East Arm.

See roach records across England →

Most recent observation5 August 2025Burgess Hill STW · 55 fish
Largest measured roach
30 cm
Median length
9 cm
Fish measured
2,517
Survey locations
10

Individual EA measurements

Largest measured roach

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
30 cm6 Sept 2018Nymans Farm, Shermanbury153191
26 cm6 Sept 2018Nymans Farm, Shermanbury153191
25.4 cm23 Jul 2002Vale Bridge61440
24.8 cm4 Sept 2012Downstream Wineham Bridge133874
24.5 cm4 Sept 2012Downstream Wineham Bridge133874
24.5 cm19 Sept 2003Shermanbury77489
24.2 cm21 Jul 2003Stairbridge Lane76621
23.9 cm21 Jul 2003Stairbridge Lane76621
23.8 cm4 Sept 2012Downstream Wineham Bridge133874
23.8 cm7 Sept 2005Shermanbury87482

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 surveyedFirst recordedLast recordedVisits finding roach
Burgess Hill STW8 Aug 20025 Aug 20257
Downstream Wineham Bridge18 Aug 199722 Aug 20249
Nymans Farm, Shermanbury4 Aug 201517 Jul 20243
Hookers Farm4 Aug 199711 Jul 20246
U/s Twineham Footbridge24 Apr 201410 Jul 20243
Stairbridge Lane28 Jul 199714 Aug 201813
Shermanbury Place GS4 Sept 20144 Sept 20141
Shermanbury5 Sept 20025 Sept 201210
Vale Bridge16 Jun 199723 Jul 20022
Upstream Mock Bridge17 Sept 199717 Sept 19971

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

1997–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 2,517 measured fish were spread across different length ranges.

Smallest
1.5 cm
Lower quarter
6 cm
Median
9 cm
Upper quarter
12 cm
Largest
30 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 1,164 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 (0.004 kg)
Median
0.5 oz (0.013 kg)
Upper quarter
1 oz (0.029 kg)
Heaviest
10 oz (0.283 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 East Arm

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

Perch Chub European eel Gudgeon Pike Dace

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 →