Perch · Perca fluviatilis

Perch in the Counter Drain

Largest measured perch: 43.6 cm

The largest perch measured in Environment Agency surveys of the Counter Drain was 43.6 cm, recorded at Welney on 21 March 2023.

Across 1,964 measured perch, the median measured length was 7.3 cm.

Surveyors recorded weights for 2 perch. The median was 3 lb 6 oz (1.53 kg) and the largest recorded weight was 3 lb 12 oz (1.7 kg).

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

See perch records across England →

Most recent observation10 June 2026Welney · 2 fish

Largest measured perch: 43.6 cm
Median length: 7.3 cm
Fish measured: 1,964
Survey locations: 9

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
43.6 cm	21 Mar 2023	Welney	162295
43 cm	27 Mar 2014	Welney	140572
39.1 cm	21 Mar 2023	Welney	162295
39 cm	13 Apr 2011	Welney	126086
38 cm	22 Apr 2004	Welney	79697
37 cm	24 Apr 2017	Welney	150366
36 cm	13 Apr 2011	Welney	126086
34 cm	13 Apr 2011	Welney	126086
32.4 cm	13 Apr 2011	Welney	126086
32 cm	3 Apr 2003	Welney	75812

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
Welney	20 Apr 1988	10 Jun 2026	11
Salters Lode	22 Apr 1988	31 Mar 2026	11
Welches	8 Apr 1993	10 Mar 2026	10
Mepal	25 Mar 1988	5 Mar 2026	10
Vandervells Lake	30 Mar 1988	12 Apr 2017	9
Sutton Gault	24 Mar 1988	3 Apr 2014	3
DS Welney	21 Apr 1988	16 May 2008	5
Jolly Bankers	23 Mar 1988	5 Apr 1993	2
Black Sluice	21 Mar 1988	21 Mar 1988	1

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

1988–2026

Survey records by year

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

888

089

090

091

092

893

094

095

096

697

098

099

000

001

002

503

604

005

006

007

608

009

010

511

012

013

614

015

016

517

018

019

020

021

022

323

024

025

426

Fish measured by surveyors

Measured length distribution

See how the 1,964 measured fish were spread across different length ranges.

Smallest: 3.4 cm
Lower quarter: 6.8 cm
Median: 7.3 cm
Upper quarter: 8.3 cm
Largest: 43.6 cm

0–99 mm

1632

100–199 mm

312

200–299 mm

300–399 mm

400–499 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 2 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest: 2 lb 16 oz (1.36 kg)
Lower quarter: 3 lb 3 oz (1.45 kg)
Median: 3 lb 6 oz (1.53 kg)
Upper quarter: 3 lb 9 oz (1.62 kg)
Heaviest: 3 lb 12 oz (1.7 kg)

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

More fish in this river

Explore the Counter Drain

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

Spined loach Pike Roach Common bream Tench European eel

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 →