Perch · Perca fluviatilis

Perch in the River Cockhaise

Largest measured perch: 23 cm

The largest perch measured in Environment Agency surveys of the River Cockhaise was 23 cm, recorded at Wildboar Bridge on 26 August 2003.

Across 46 measured perch, the median measured length was 13.4 cm.

Surveyors recorded weights for 30 perch. The median was 1 oz (0.0295 kg) and the largest recorded weight was 6.8 oz (0.194 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 Cockhaise.

See perch records across England →

Most recent observation31 July 2024Wildboar Bridge · 1 fish

Largest measured perch: 23 cm
Median length: 13.4 cm
Fish measured: 46
Survey locations: 4

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
23 cm	26 Aug 2003	Wildboar Bridge	76916
22.5 cm	26 Aug 2003	Wildboar Bridge	76916
22.5 cm	1 Aug 2003	Holywell Pumping Station	76918
21 cm	13 May 2014	Upstream Cinder Hill Trout Fishery	155801
20.8 cm	11 Aug 2011	Wildboar Bridge	127362
19.5 cm	13 May 2014	Upstream Cinder Hill Trout Fishery	155801
18.8 cm	13 May 2014	Upstream Cinder Hill Trout Fishery	155801
17.5 cm	4 Sept 2003	Horsted Keynes STW	76921
17 cm	26 Jun 2001	Horsted Keynes STW	51875
16.2 cm	26 Aug 2003	Wildboar Bridge	76916

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
Wildboar Bridge	26 Aug 2003	31 Jul 2024	3
Upstream Cinder Hill Trout Fishery	13 May 2014	13 May 2014	1
Holywell Pumping Station	1 Aug 2003	2 May 2013	2
Horsted Keynes STW	26 Jun 2001	4 Sept 2003	2

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

2001–2024

Survey records by year

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

101

002

303

004

005

006

007

008

009

010

111

012

113

114

015

016

017

018

019

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 46 measured fish were spread across different length ranges.

Smallest: 7.5 cm
Lower quarter: 9.9 cm
Median: 13.5 cm
Upper quarter: 15.7 cm
Largest: 23 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 30 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.2 oz (0.006 kg)
Lower quarter: 0.4 oz (0.012 kg)
Median: 1 oz (0.0295 kg)
Upper quarter: 1.7 oz (0.0468 kg)
Heaviest: 6.8 oz (0.194 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 Cockhaise

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

Brown / sea trout European eel Bullhead Minnow Gudgeon Chub

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 →