Roach · Rutilus rutilus

Roach in the River Wantsum

Largest measured roach: 31 cm

The largest roach measured in Environment Agency surveys of the River Wantsum was 31 cm, recorded at Reculver Sluice on 27 July 2004.

Across 4,252 measured roach, the median measured length was 11.9 cm.

Surveyors recorded weights for 45 roach. The median was 0.4 oz (0.01 kg) and the largest recorded weight was 10.8 oz (0.306 kg).

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

See roach records across England →

Most recent observation30 April 2026Wantsum AC car park · 54 fish

Largest measured roach: 31 cm
Median length: 11.9 cm
Fish measured: 4,252
Survey locations: 3

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 cm	27 Jul 2004	Reculver Sluice	82576
28.1 cm	27 Jul 2004	Reculver Sluice	82576
27.7 cm	3 Aug 2004	Wantsum AC car park	82572
27.7 cm	27 Jul 2004	Reculver Sluice	82576
27 cm	21 Sept 2006	Reculver Sluice	103381
27 cm	27 Jul 2004	Reculver Sluice	82576
27 cm	27 Jul 2004	Reculver Sluice	82576
26.7 cm	27 Jul 2004	Reculver Sluice	82576
26.5 cm	27 Jul 2004	Reculver Sluice	82576
26.4 cm	27 Jul 2004	Reculver Sluice	82576

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
Wantsum AC car park	6 Sept 2002	30 Apr 2026	9
Reculver Sluice	27 Jul 2004	14 Jul 2015	5
Reculver North Stream	6 Sept 2002	26 Oct 2005	2

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

2002–2026

Survey records by year

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

202

203

204

305

206

007

008

009

010

211

012

013

014

215

016

017

018

019

020

021

022

023

024

025

126

Fish measured by surveyors

Measured length distribution

See how the 4,252 measured fish were spread across different length ranges.

Smallest: 2.4 cm
Lower quarter: 9.5 cm
Median: 11.9 cm
Upper quarter: 15.2 cm
Largest: 31 cm

0–99 mm

1309

100–199 mm

2601

200–299 mm

341

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 45 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.3 oz (0.008 kg)
Median: 0.4 oz (0.01 kg)
Upper quarter: 0.5 oz (0.013 kg)
Heaviest: 10.8 oz (0.306 kg)

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

More fish in this river

Explore the River Wantsum

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

Common bream Perch Rudd Tench Common carp Gudgeon

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 →