Roach · Rutilus rutilus

Roach in the Main River Parrett

Largest measured roach: 27.4 cm

The largest roach measured in Environment Agency surveys of the Main River Parrett was 27.4 cm, recorded at Midelney on 7 August 2019.

Across 691 measured roach, the median measured length was 7.4 cm.

Surveyors recorded weights for 23 roach. The median was 0.7 oz (0.02 kg) and the largest recorded weight was 1.6 oz (0.044 kg).

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

See roach records across England →

Most recent observation6 August 2025Midelney · 5 fish

Largest measured roach: 27.4 cm
Median length: 7.4 cm
Fish measured: 691
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
27.4 cm	7 Aug 2019	Midelney	155985
25.2 cm	28 Jul 2009	Yeo Valley Creamery	118147
23 cm	12 Aug 2009	Oath Lock	118496
22.5 cm	28 Jul 2009	Yeo Valley Creamery	118147
22.2 cm	17 Sept 2009	Gawbridge	119500
20.7 cm	17 Sept 2009	Gawbridge	119500
20.5 cm	6 Aug 2013	Pibsbury	137759
19.5 cm	25 Jul 2009	Pibsbury	118160
19 cm	17 Sept 2009	Gawbridge	119500
18.9 cm	17 Sept 2009	Gawbridge	119500

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
Westover Bridge	23 Jul 2009	6 Aug 2025	16
Midelney	11 Aug 2009	6 Aug 2025	21
Pibsbury	23 Jul 2009	4 Aug 2025	16
Kings Sedgemoor Drain Downstream Gerylake	13 Aug 2013	4 Aug 2025	9
Gawbridge	17 Sept 2009	24 Jul 2025	7
Oath Lock	12 Aug 2009	9 Aug 2023	8
Yeo Valley Creamery	28 Jul 2009	13 Jul 2023	3
Knapp Br.	10 Aug 2006	8 Aug 2013	16
Parchey	18 Aug 2011	18 Aug 2011	1

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

2006–2025

Survey records by year

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

1006

007

008

1209

010

911

012

1813

014

915

016

517

018

1519

020

121

022

1023

024

825

Fish measured by surveyors

Measured length distribution

See how the 691 measured fish were spread across different length ranges.

Smallest: 2 cm
Lower quarter: 4.3 cm
Median: 7.4 cm
Upper quarter: 10.7 cm
Largest: 27.4 cm

0–99 mm

485

100–199 mm

199

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 23 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.004 kg)
Lower quarter: 0.5 oz (0.015 kg)
Median: 0.7 oz (0.02 kg)
Upper quarter: 1 oz (0.0275 kg)
Heaviest: 1.6 oz (0.044 kg)

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

More fish in this river

Explore the Main River Parrett

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

European eel Perch Ruffe Gudgeon 3-spined stickleback Pike

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 →