Perch · Perca fluviatilis

Perch in the Castle Dyke

Largest measured perch: 39.2 cm

The largest perch measured in Environment Agency surveys of the Castle Dyke was 39.2 cm, recorded at Gipsey Bridge on 4 July 2001.

Across 607 measured perch, the median measured length was 9.3 cm.

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

See perch records across England →

Most recent observation14 November 2016Gipsey Bridge · 11 fish

Largest measured perch: 39.2 cm
Median length: 9.3 cm
Fish measured: 607
Survey locations: 2

Individual EA measurements

Largest measured perch

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
39.2 cm	4 Jul 2001	Gipsey Bridge	59059
37.7 cm	4 Jul 2001	Gipsey Bridge	59059
28.2 cm	16 May 2006	Gipsey Bridge	90898
25.9 cm	16 May 2006	Gipsey Bridge	90898
24.3 cm	16 May 2006	Gipsey Bridge	90898
22.4 cm	4 Jul 2001	Gipsey Bridge	59059
22.3 cm	8 Nov 1990	Upstream Anton Gowt Lock	58267
20.7 cm	16 May 2006	Gipsey Bridge	90898
20.3 cm	16 May 2006	Gipsey Bridge	90898
19.8 cm	16 May 2006	Gipsey Bridge	90898

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where perch were found

Each point marks a survey location with at least one perch 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 perch
Gipsey Bridge	25 Oct 1990	14 Nov 2016	7
Upstream Anton Gowt Lock	8 Nov 1990	10 Aug 2011	5

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 perch that year.

290

091

092

293

094

095

296

097

098

099

000

201

002

003

004

005

106

007

008

009

010

111

012

013

014

015

216

Fish measured by surveyors

Measured length distribution

See how the 607 measured fish were spread across different length ranges.

Smallest: 4.6 cm
Lower quarter: 7.7 cm
Median: 9.3 cm
Upper quarter: 10.6 cm
Largest: 39.2 cm

0–99 mm

365

100–199 mm

233

200–299 mm

300–399 mm

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.

Pike Roach 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 →