Perch · Perca fluviatilis

Perch in the River Delph

Largest measured perch: 36.4 cm

The largest perch measured in Environment Agency surveys of the River Delph was 36.4 cm, recorded at Welmore Lake Sluice on 27 June 2023.

Across 2,249 measured perch, the median measured length was 8.3 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 Delph.

See perch records across England →

Most recent observation27 June 2023Welmore Lake Sluice · 344 fish

Largest measured perch: 36.4 cm
Median length: 8.3 cm
Fish measured: 2,249
Survey locations: 10

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
36.4 cm	27 Jun 2023	Welmore Lake Sluice	162467
31.1 cm	27 Jun 2023	Welmore Lake Sluice	162467
30.8 cm	14 Dec 1988	Sutton Gault Bridge	29655
30.4 cm	27 Jun 2023	Welmore Lake Sluice	162467
30.4 cm	27 Jun 2023	Welmore Lake Sluice	162467
29 cm	27 Jun 2023	Welmore Lake Sluice	162467
28.8 cm	5 Aug 1997	Sutton Gault Bridge	29673
28.3 cm	21 Dec 1988	Mepal Bridge	29652
27.4 cm	27 Jun 2023	Welmore Lake Sluice	162467
27 cm	27 Jun 2023	Welmore Lake Sluice	162467

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
Welmore Lake Sluice	18 Jun 1993	27 Jun 2023	7
Earith Sluice Pools	29 Apr 2013	29 Apr 2013	1
Earith	13 Dec 1988	30 Nov 2011	6
Sutton Gault Bridge	14 Dec 1988	15 Jun 2011	6
DS Welney Bridge	4 Jan 1989	1 Jun 2011	4
Welches Dam	3 Jan 1989	23 May 2011	6
Welney Bridge	17 Jun 1993	12 Jun 2009	5
Jolly Bankers Bridge	16 Dec 1988	29 Jul 1997	3
Old Hundred Farm	10 Jan 1989	22 Jul 1997	2
Mepal Bridge	21 Dec 1988	22 Jun 1993	2

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

1988–2023

Survey records by year

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

488

389

090

091

092

893

094

095

096

897

098

099

000

001

002

503

004

205

006

007

008

509

010

511

012

113

014

015

016

017

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 2,249 measured fish were spread across different length ranges.

Smallest: 3.3 cm
Lower quarter: 7.3 cm
Median: 8.3 cm
Upper quarter: 9.3 cm
Largest: 36.4 cm

0–99 mm

1810

100–199 mm

403

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Delph

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

Roach Pike Rudd Common bream Ruffe 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 →