Perch · Perca fluviatilis

Perch in the Bourne

Largest measured perch: 29.9 cm

The largest perch measured in Environment Agency surveys of the Bourne was 29.9 cm, recorded at Pierce Mill on 19 August 2010.

Across 13 measured perch, the median measured length was 13.1 cm.

Surveyors recorded one individual weight: 12.8 oz (0.362 kg).

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

See perch records across England →

Most recent observation7 August 2023Pierce Mill · 1 fish

Largest measured perch: 29.9 cm
Median length: 13.1 cm
Fish measured: 13
Survey locations: 1

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
29.9 cm	19 Aug 2010	Pierce Mill	123504
28.4 cm	8 Aug 2002	Pierce Mill	66861
27.2 cm	2 Aug 2017	Pierce Mill	151554
24.3 cm	2 Aug 2017	Pierce Mill	151554
15.8 cm	23 Jun 2011	Pierce Mill	126836
15.2 cm	2 Aug 2017	Pierce Mill	151554
13.1 cm	2 Aug 2017	Pierce Mill	151554
12.8 cm	2 Aug 2017	Pierce Mill	151554
12.7 cm	2 Aug 2017	Pierce Mill	151554
12.6 cm	2 Aug 2017	Pierce Mill	151554

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
Pierce Mill	8 Aug 2002	7 Aug 2023	5

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

2002–2023

Survey records by year

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

102

003

004

005

006

007

008

009

110

111

012

013

014

015

016

117

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 13 measured fish were spread across different length ranges.

Smallest: 10.4 cm
Lower quarter: 12.6 cm
Median: 13.1 cm
Upper quarter: 24.3 cm
Largest: 29.9 cm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

One individual weight was recorded for this fish and river. This is a subset of the measured fish and may not represent the whole population.

Recorded weight: 12.8 oz (0.362 kg)

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

More fish in this river

Explore the Bourne

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

Brown / sea trout Chub Minnow Stone loach 3-spined stickleback Pike

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 →