RiverFish

Perch · Perca fluviatilis

Perch in the River Deben (Main Reaches)

Largest measured perch: 30.2 cm

The largest perch measured in Environment Agency surveys of the River Deben (Main Reaches) was 30.2 cm, recorded at Upstream Kettleburgh on 9 April 2004.

Across 956 measured perch, the median measured length was 11.3 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 Deben (Main Reaches).

See perch records across England →

Most recent observation14 April 2026Downstream Glevering Hall · 11 fish
Largest measured perch
30.2 cm
Median length
11.3 cm
Fish measured
956
Survey locations
17

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
30.2 cm9 Apr 2004Upstream Kettleburgh103948
28.9 cm9 Apr 2004Upstream Kettleburgh103948
27 cm18 Apr 2024Downstream Glevering Hall164897
26.8 cm3 Jun 1991Melton Sluice4072
26.6 cm18 May 2016Ufford148112
25.9 cm4 Jun 1991Ufford4071
25.5 cm9 Apr 2004Upstream Kettleburgh103948
25.4 cm11 Apr 2025Downstream Glevering Hall177615
25.3 cm4 Jun 1991Ufford4071
25.3 cm3 Jun 1991Melton Sluice4072

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
Downstream Glevering Hall7 Dec 198714 Apr 20267
Glevering Mill Fry Survey25 Sept 202419 Sept 20252
Downstream Sanctuary Bridge Fry Survey18 Sept 202518 Sept 20251
Ufford4 Jun 199114 Apr 20257
Upstream Kettleburgh15 Dec 198721 Apr 20228
Downstream Wickham Market9 Dec 198729 Apr 20104
Low Farm 217 Dec 199726 Mar 20042
Downstream Letheringham Mill4 Mar 20044 Mar 20041
Upstream Glovering House3 Mar 20043 Mar 20041
Wickham Market to Loudham27 Feb 200427 Feb 20041
Melton Mill to Ufford Mill19 Feb 200419 Feb 20041
Easton Farm Park2 Dec 198716 Dec 19973
Upstream Wickham Market10 Jun 199112 Dec 19972
Melton Sluice3 Jun 199127 Nov 19973
Loudham Decoy11 May 19913 Aug 19942
Naunton Hall Farm14 Dec 19875 Jun 19912
Low Farm10 Dec 19875 Jun 19912

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

1987–2026

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 956 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
6.4 cm
Median
11.3 cm
Upper quarter
14.6 cm
Largest
30.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Deben (Main Reaches)

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

Roach Pike European eel Stone loach Dace 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 →