RiverFish

Perch · Perca fluviatilis

Perch in the River Cliveden

Largest measured perch: 20.7 cm

The largest perch measured in Environment Agency surveys of the River Cliveden was 20.7 cm, recorded at Cliveden Upstream Fry on 22 August 2018.

Across 106 measured perch, the median measured length was 7.1 cm.

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

See perch records across England →

Most recent observation4 September 2025Cliveden Upstream Fry · 1 fish
Largest measured perch
20.7 cm
Median length
7.1 cm
Fish measured
106
Survey locations
2

Individual EA measurements

Largest measured perch

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
20.7 cm22 Aug 2018Cliveden Upstream Fry153436
20.6 cm22 Aug 2018Cliveden Upstream Fry153436
18.8 cm22 Aug 2012Cliveden Downstream Fry135298
18.6 cm22 Aug 2018Cliveden Upstream Fry153436
18.2 cm22 Aug 2018Cliveden Upstream Fry153436
17.6 cm22 Aug 2018Cliveden Upstream Fry153436
17.5 cm22 Aug 2018Cliveden Upstream Fry153436
17.1 cm22 Aug 2018Cliveden Upstream Fry153436
15.9 cm22 Aug 2018Cliveden Upstream Fry153436
15.8 cm22 Aug 2018Cliveden Upstream Fry153436

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 surveyedFirst recordedLast recordedVisits finding perch
Cliveden Upstream Fry20 Aug 20074 Sept 202511
Cliveden Downstream Fry31 Aug 20064 Sept 202512

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

2006–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 106 measured fish were spread across different length ranges.

Smallest
3.8 cm
Lower quarter
5.8 cm
Median
7.1 cm
Upper quarter
11.7 cm
Largest
20.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Cliveden

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

Minnow Chub Gudgeon Roach Dace Bleak

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 →