Roach · Rutilus rutilus

Roach in the Pymmes Brook

Largest measured roach: 17.9 cm

The largest roach measured in Environment Agency surveys of the Pymmes Brook was 17.9 cm, recorded at Arnos Park on 6 April 2012.

Across 52 measured roach, the median measured length was 9.4 cm.

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

See roach records across England →

Most recent observation8 April 2026Arnos Park · 9 fish

Largest measured roach: 17.9 cm
Median length: 9.4 cm
Fish measured: 52
Survey locations: 2

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
17.9 cm	6 Apr 2012	Arnos Park	131062
17.4 cm	8 Apr 2026	Arnos Park	181258
17.1 cm	8 Apr 2026	Arnos Park	181258
17.1 cm	6 Apr 2012	Arnos Park	131062
16.5 cm	6 Apr 2012	Arnos Park	131062
16.1 cm	8 Apr 2026	Arnos Park	181258
15.9 cm	8 Apr 2026	Arnos Park	181258
15.8 cm	8 Apr 2026	Arnos Park	181258
15.7 cm	6 Apr 2012	Arnos Park	131062
15.6 cm	6 Apr 2012	Arnos Park	131062

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
Arnos Park	6 Apr 2012	8 Apr 2026	3
Oakhill Park	12 Apr 2012	9 Apr 2015	2

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

2012–2026

Survey records by year

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

212

013

014

215

016

017

018

019

020

021

022

023

024

025

126

Fish measured by surveyors

Measured length distribution

See how the 52 measured fish were spread across different length ranges.

Smallest: 4.4 cm
Lower quarter: 7.6 cm
Median: 9.4 cm
Upper quarter: 14.5 cm
Largest: 17.9 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

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 →