Roach · Rutilus rutilus

Roach in the River Sapiston (Black Bourn)

Largest measured roach: 31.3 cm

The largest roach measured in Environment Agency surveys of the River Sapiston (Black Bourn) was 31.3 cm, recorded at Burnthall Plantation on 7 May 1992.

Across 2,899 measured roach, the median measured length was 10.3 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 Sapiston (Black Bourn).

See roach records across England →

Most recent observation21 August 2024Bullbridge · 1 fish

Largest measured roach: 31.3 cm
Median length: 10.3 cm
Fish measured: 2,899
Survey locations: 11

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
31.3 cm	7 May 1992	Burnthall Plantation	30061
30.3 cm	13 Jul 1988	Sapiston Bridge	30032
29.8 cm	7 May 1992	Burnthall Plantation	30061
29.8 cm	7 May 1992	Burnthall Plantation	30061
29.8 cm	13 Jul 1988	Sapiston Bridge	30032
29.8 cm	11 Jul 1988	Micklemere	30028
29.3 cm	13 Jul 1988	Sapiston Bridge	30032
28.8 cm	13 Jul 1988	Sapiston Bridge	30032
28.3 cm	7 May 1992	Burnthall Plantation	30061
28.3 cm	13 Jul 1988	Sapiston Bridge	30032

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
Bullbridge	17 May 1990	21 Aug 2024	3
Euston	14 Jul 1988	8 Nov 2018	5
Bailey Pool Bridge	21 May 1990	5 Nov 2018	7
Sapiston Bridge	13 Jul 1988	7 Sept 2012	6
Ixworth	30 Mar 1989	5 Sept 2012	5
Micklemere	11 Jul 1988	4 Sept 2012	8
Parkhouse Farm	13 Jul 1988	26 Oct 1995	3
Burnthall Plantation	7 May 1992	26 Oct 1995	2
US Burnthall Plantation	5 May 1992	24 Oct 1995	2
Ixworth Mill	12 Jul 1988	17 Oct 1995	3
Bardwell Mill	3 Apr 1989	16 Oct 1995	2

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

1988–2024

Survey records by year

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

588

589

390

091

1092

093

094

1095

096

097

098

099

100

001

002

003

004

105

006

007

008

409

010

011

412

013

014

015

016

017

218

019

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 2,899 measured fish were spread across different length ranges.

Smallest: 2.5 cm
Lower quarter: 7.3 cm
Median: 10.3 cm
Upper quarter: 14.3 cm
Largest: 31.3 cm

0–99 mm

1328

100–199 mm

1401

200–299 mm

168

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Sapiston (Black Bourn)

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

Dace Gudgeon Pike Chub European eel Bullhead

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 →