RiverFish

Perch · Perca fluviatilis

Perch in the River Ember FAS

Largest measured perch: 38 cm

The largest perch measured in Environment Agency surveys of the River Ember FAS was 38 cm, recorded at Below Island Barn Weir on 2 October 2008.

Across 250 measured perch, the median measured length was 11.4 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 Ember FAS.

See perch records across England →

Most recent observation24 July 2025Below Island Barn Weir · 4 fish
Largest measured perch
38 cm
Median length
11.4 cm
Fish measured
250
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.

LengthSurvey dateSurvey locationSurvey ID
38 cm2 Oct 2008Below Island Barn Weir115076
37.1 cm2 Oct 2008Below Island Barn Weir115076
34.6 cm28 May 1993Below Island Barn Weir103180
34.2 cm26 Sept 2007Below Island Barn Weir106966
34.1 cm2 Oct 2008Below Island Barn Weir115076
32.9 cm28 Sept 2006Below Island Barn Weir102033
31.4 cm22 May 1990Downstream Esher STW103252
30.4 cm22 May 1990Downstream Esher STW103252
30.2 cm22 May 1990Downstream Esher STW103252
29.9 cm28 Sept 2006Below Island Barn Weir102033

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
Below Island Barn Weir28 May 199324 Jul 202512
Old Ember Channel opposite Orchard Lane16 Nov 200612 Oct 20092
Downstream Esher STW22 May 199014 May 19932
Upstream Esher STW22 May 199022 May 19901

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

1990–2025

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 250 measured fish were spread across different length ranges.

Smallest
4.5 cm
Lower quarter
9.2 cm
Median
11.4 cm
Upper quarter
13.6 cm
Largest
38 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ember FAS

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

European eel Roach Pike Dace Bleak Gudgeon

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 →