RiverFish

Roach · Rutilus rutilus

Roach in the River Idle

Largest measured roach: 34.1 cm

The largest roach measured in Environment Agency surveys of the River Idle was 34.1 cm, recorded at Misterton Soss on 12 May 1995.

Across 2,563 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 Idle.

See roach records across England →

Most recent observation23 August 2024Bawtry · 8 fish
Largest measured roach
34.1 cm
Median length
9.8 cm
Fish measured
2,563
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
34.1 cm12 May 1995Misterton Soss24351
33.9 cm12 May 1995Misterton Soss24351
32.7 cm16 Sept 2005Eaton86192
32.2 cm12 May 1995Misterton Soss24351
31 cm10 Oct 2002Bawtry63980
30 cm29 Jun 1983Bawtry79215
29.8 cm2 Jul 2012Idle Valley Nature Reserve131731
29.8 cm23 Nov 1989Gamston79196
29.8 cm16 May 1984Bawtry79209
29.5 cm27 Oct 2003Chain Bridge Lane78629

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
Bawtry28 Jan 198323 Aug 202417
Chain Bridge Lane8 Mar 200021 Aug 202413
Mattersey Priory20 Aug 198713 Apr 201714
Tiln23 Oct 200211 Apr 20175
Eaton16 Mar 200011 Apr 201712
Idle Valley Nature Reserve2 Jul 20122 Jul 20121
Haxey Gate12 May 19955 Sept 20064
Misterton Soss12 May 199513 Sept 20042
Misson3 Nov 20033 Nov 20031
Gamston23 Nov 198921 Oct 20033

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

1983–2024

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 2,563 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
7.5 cm
Median
9.8 cm
Upper quarter
14.4 cm
Largest
34.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Idle

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

European eel Perch Pike Chub Gudgeon Bleak

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 →