RiverFish

Perch · Perca fluviatilis

Perch in the River Gade

Largest measured perch: 37.5 cm

The largest perch measured in Environment Agency surveys of the River Gade was 37.5 cm, recorded at Cassiobury Park on 15 July 2003.

Across 645 measured perch, the median measured length was 10.6 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 Gade.

See perch records across England →

Most recent observation11 June 2013Kings Langley · 17 fish
Largest measured perch
37.5 cm
Median length
10.6 cm
Fish measured
645
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
37.5 cm15 Jul 2003Cassiobury Park76389
32.8 cm3 Aug 2005Cassiobury Park85313
32.6 cm6 Jun 2007Cassiobury Park105543
32.1 cm22 Aug 2004Cassiobury Park80720
32 cm22 Aug 2004Cassiobury Park80720
31 cm3 Oct 2000Cassiobury Park75768
30.5 cm3 Oct 2000Cassiobury Park75768
29.8 cm3 Aug 2005Cassiobury Park85313
29.7 cm3 Sept 2010Cura Fisheries123653
29.1 cm3 Aug 2005Cassiobury Park85313

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
Kings Langley15 Jul 200411 Jun 20132
Cassiobury Park3 Oct 200023 Apr 201311
Cura Fisheries3 Sept 20103 Sept 20101
Gadebridge Park26 May 200426 May 20041

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

2000–2013

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 645 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
8 cm
Median
10.6 cm
Upper quarter
14.5 cm
Largest
37.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Gade

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

Bullhead Minnow 3-spined stickleback Stone loach Brown / sea trout Roach

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 →