RiverFish

Roach · Rutilus rutilus

Roach in the Castle Dyke

Largest measured roach: 27.5 cm

The largest roach measured in Environment Agency surveys of the Castle Dyke was 27.5 cm, recorded at Upstream Anton Gowt Lock on 8 November 1990.

Across 3,913 measured roach, the median measured length was 11.1 cm.

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

See roach records across England →

Most recent observation28 June 2016Gipsey Bridge · 684 fish
Largest measured roach
27.5 cm
Median length
11.1 cm
Fish measured
3,913
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.

LengthSurvey dateSurvey locationSurvey ID
27.5 cm8 Nov 1990Upstream Anton Gowt Lock58267
27.3 cm8 Nov 1990Upstream Anton Gowt Lock58267
27 cm8 Nov 1990Upstream Anton Gowt Lock58267
25.8 cm10 Aug 2011Upstream Anton Gowt Lock128394
25.5 cm8 Nov 1990Upstream Anton Gowt Lock58267
25.4 cm10 Aug 2011Upstream Anton Gowt Lock128394
25.2 cm10 Aug 2011Upstream Anton Gowt Lock128394
25 cm8 Nov 1990Upstream Anton Gowt Lock58267
24.8 cm10 Aug 2011Upstream Anton Gowt Lock128394
24.7 cm10 Aug 2011Upstream Anton Gowt Lock128394

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
Gipsey Bridge25 Oct 199028 Jun 20166
Upstream Anton Gowt Lock8 Nov 199010 Aug 20114

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

1990–2016

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 3,913 measured fish were spread across different length ranges.

Smallest
3.8 cm
Lower quarter
7.3 cm
Median
11.1 cm
Upper quarter
15 cm
Largest
27.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Castle Dyke

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

Perch Pike Common bream Ruffe Tench Silver bream

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 →