Roach · Rutilus rutilus

Roach in the River Lymn FMU

Largest measured roach: 25.6 cm

The largest roach measured in Environment Agency surveys of the River Lymn FMU was 25.6 cm, recorded at Moat House Farm on 2 April 1996.

Across 3,036 measured roach, the median measured length was 9.8 cm.

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

See roach records across England →

Most recent observation7 November 2025Mill Bridge · 75 fish

Largest measured roach: 25.6 cm
Median length: 9.8 cm
Fish measured: 3,036
Survey locations: 5

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
25.6 cm	2 Apr 1996	Moat House Farm	58153
25 cm	2 Apr 1996	Moat House Farm	58153
24.9 cm	5 Sept 2019	Partney Bridge	155829
24 cm	2 Apr 1996	Moat House Farm	58153
23 cm	31 Jul 2012	Mill Bridge	132824
23 cm	17 Jun 2004	Mill Bridge	82819
22.9 cm	2 Apr 1996	Moat House Farm	58153
22.2 cm	2 Apr 1996	Moat House Farm	58153
22.2 cm	2 Apr 1996	Moat House Farm	58153
22.1 cm	16 Aug 2006	Mill Bridge	100692

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
Mill Bridge	29 Sept 1987	7 Nov 2025	14
Stockwith Mill	18 Jun 2015	18 Jul 2024	2
Partney Bridge	23 Apr 2007	5 Sept 2019	3
Raithby Bridge	13 Jun 2012	13 Jun 2012	1
Moat House Farm	2 Oct 1987	2 Apr 1996	2

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

1987–2025

Survey records by year

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

287

088

089

090

091

092

193

094

095

296

097

098

099

000

001

102

103

104

105

106

107

008

009

010

011

312

013

014

115

116

017

018

219

020

021

122

023

224

125

Fish measured by surveyors

Measured length distribution

See how the 3,036 measured fish were spread across different length ranges.

Smallest: 3.2 cm
Lower quarter: 8.1 cm
Median: 9.8 cm
Upper quarter: 11.5 cm
Largest: 25.6 cm

0–99 mm

1585

100–199 mm

1422

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Lymn FMU

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

Bullhead Brown / sea trout European eel 3-spined stickleback Perch Brook lamprey

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 →