Perch · Perca fluviatilis

Perch in the River Ouse Tributaries

Largest measured perch: 25.7 cm

The largest perch measured in Environment Agency surveys of the River Ouse Tributaries was 25.7 cm, recorded at Shell Brook d/s Ardingly Reservoir on 24 August 2021.

Across 57 measured perch, the median measured length was 14 cm.

Surveyors recorded weights for 3 perch. The median was 0.9 oz (0.025 kg) and the largest recorded weight was 1 oz (0.027 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 Ouse Tributaries.

See perch records across England →

Most recent observation20 September 2023Shell Brook d/s Ardingly Reservoir · 17 fish

Largest measured perch: 25.7 cm
Median length: 14 cm
Fish measured: 57
Survey locations: 5

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
25.7 cm	24 Aug 2021	Shell Brook d/s Ardingly Reservoir	160161
21.6 cm	24 Aug 2021	Shell Brook d/s Ardingly Reservoir	160161
21.4 cm	24 Aug 2021	Shell Brook d/s Ardingly Reservoir	160161
20.6 cm	24 Aug 2021	Shell Brook d/s Ardingly Reservoir	160161
20.5 cm	24 Aug 2021	Shell Brook d/s Ardingly Reservoir	160161
20.3 cm	20 Sept 2023	Shell Brook d/s Ardingly Reservoir	163802
19.3 cm	24 Aug 2021	Shell Brook d/s Ardingly Reservoir	160161
19 cm	29 Sept 2009	Andrew's Stream	119183
18.7 cm	29 Sept 2009	Andrew's Stream	119183
18.6 cm	24 Aug 2021	Shell Brook d/s Ardingly Reservoir	160161

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
Shell Brook d/s Ardingly Reservoir	24 Aug 2021	20 Sept 2023	2
Balcombe/Lower Lodge Gill	12 Aug 2003	5 Sept 2018	2
Pellingford Brook	15 Aug 2013	15 Aug 2013	1
Sheffield Bluebell Railway Station Stream	27 Oct 2009	27 Oct 2009	1
Andrew's Stream	29 Sept 2009	29 Sept 2009	1

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

2003–2023

Survey records by year

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

103

004

005

006

007

008

209

010

011

012

113

014

015

016

017

118

019

020

121

022

123

Fish measured by surveyors

Measured length distribution

See how the 57 measured fish were spread across different length ranges.

Smallest: 4.4 cm
Lower quarter: 10.7 cm
Median: 14 cm
Upper quarter: 17.2 cm
Largest: 25.7 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 3 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.8 oz (0.024 kg)
Lower quarter: 0.9 oz (0.0245 kg)
Median: 0.9 oz (0.025 kg)
Upper quarter: 0.9 oz (0.026 kg)
Heaviest: 1 oz (0.027 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 Ouse Tributaries

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

Brown / sea trout Dace Bullhead Roach 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 →