Perch · Perca fluviatilis

Perch in the Itchen Navigation

Largest measured perch: 28.3 cm

The largest perch measured in Environment Agency surveys of the Itchen Navigation was 28.3 cm, recorded at Allbrook Lock on 3 September 2004.

Across 42 measured perch, the median measured length was 15.2 cm.

Surveyors recorded weights for 18 perch. The median was 1.7 oz (0.0495 kg) and the largest recorded weight was 1 lb 1.2 oz (0.487 kg).

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

See perch records across England →

Most recent observation27 October 2025Ham Farm · 3 fish

Largest measured perch: 28.3 cm
Median length: 15.2 cm
Fish measured: 42
Survey locations: 3

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
28.3 cm	3 Sept 2004	Allbrook Lock	82078
27.5 cm	19 Sept 2005	Allbrook Lock	86420
26.3 cm	29 Sept 2003	Allbrook Lock	77813
24.8 cm	30 Aug 2023	Ham Farm	163752
24.6 cm	18 Sept 2002	Allbrook Lock	55075
24.5 cm	30 Aug 2023	Ham Farm	163752
23.4 cm	19 Sept 2005	Allbrook Lock	86420
23.3 cm	27 Oct 2025	Ham Farm	179579
21.5 cm	9 Sept 2006	Tun Bridge	101569
21 cm	27 Oct 2025	Ham Farm	179579

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
Ham Farm	23 Aug 2017	27 Oct 2025	5
Tun Bridge	11 Aug 2004	9 Sept 2006	2
Allbrook Lock	18 Sept 2002	19 Sept 2005	4

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

2002–2025

Survey records by year

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

102

103

204

105

106

007

008

009

010

011

012

013

014

015

016

117

018

119

020

021

122

123

024

125

Fish measured by surveyors

Measured length distribution

See how the 42 measured fish were spread across different length ranges.

Smallest: 7.8 cm
Lower quarter: 13.4 cm
Median: 15.3 cm
Upper quarter: 20.9 cm
Largest: 28.3 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 18 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.8 oz (0.023 kg)
Lower quarter: 1.4 oz (0.0402 kg)
Median: 1.7 oz (0.0495 kg)
Upper quarter: 6.7 oz (0.191 kg)
Heaviest: 1 lb 1.2 oz (0.487 kg)

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

More fish in this river

Explore the Itchen Navigation

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

European eel Pike Minnow Roach Grayling Atlantic salmon

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 →