RiverFish

Perch · Perca fluviatilis

Perch in the River Stour

Largest measured perch: 40.2 cm

The largest perch measured in Environment Agency surveys of the River Stour was 40.2 cm, recorded at Lamarsh FGS A on 4 August 2023.

Across 11,197 measured perch, the median measured length was 13.1 cm.

Surveyors recorded weights for 223 perch. The median was 4.7 oz (0.134 kg) and the largest recorded weight was 14.8 oz (0.42 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 Stour.

See perch records across England →

Most recent observation14 July 2026Tendring Hall · 1 fish
Largest measured perch
40.2 cm
Median length
13.1 cm
Fish measured
11,197
Survey locations
51

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
40.2 cm4 Aug 2023Lamarsh FGS A162887
40.2 cm1 Sept 2015Wixoe Pumping Station146721
40.2 cm19 Sept 2012Wixoe Pumping Station134432
39.7 cm15 Jul 2008Lamarsh FGS A111991
39.6 cm10 Aug 2006Lamarsh FGS A100809
39.3 cm1 Aug 2007Lamarsh FGS A106206
39.3 cm1 Aug 2007Lamarsh FGS A106206
39.2 cm4 Aug 2023Lamarsh FGS A162887
39.2 cm19 Sept 2012Wixoe Pumping Station134432
39.1 cm10 Aug 2006Lamarsh FGS A100809

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
Tendring Hall20 Jul 198314 Jul 202623
Higham Hall18 Aug 19833 Jul 202622
Mill Meadow29 Sept 198111 Aug 202531
Bures Mill18 Jul 19915 Aug 202522
Lamarsh FGS A15 Oct 198130 Jul 202525
Pitmire A27 Sept 198829 Jul 202522
Anchor Bridge19 Jul 198324 Jul 202526
Bures Bridge A12 Nov 198117 Jul 202529
Fen Bridge23 Aug 198315 Jul 202521
Stratford28 Jul 198310 Jul 202516
Baythorne End15 Oct 19808 Oct 202415
Rats Castle21 Oct 198023 Sept 202416
Great Thurlow25 Sept 198018 Sept 202412
Bower Hall18 Oct 19853 Sept 202413
Kedington Radial Gate15 Oct 198528 Aug 202412
Wixoe Pumping Station24 Sept 198527 Aug 202413
Mill Farm Clare14 Oct 198023 Aug 202415
Bush Boake Allen27 Sept 198514 Aug 202414
Boxted Mill21 Jul 198813 Aug 202416
Wormingford Mill19 Nov 19817 Aug 202415
Pentlow Mill12 Oct 198831 Jul 202413
Wiston Mill8 Aug 198817 Jul 202412
Downstream Dedham Mill19 Aug 19833 Jul 202410
Upstream Dedham Mill24 Jun 198819 Jun 202411
Clare Mill17 Oct 19855 Nov 202113
Liston Mill22 Sept 198121 Aug 201614
Shalford Weir30 Sept 19819 Aug 201618
Wissington11 Aug 19882 Aug 201617
Stoke By Clare8 Oct 19852 Sept 201510
Flatford Mill25 Aug 19831 Jul 201510
Langham Intake21 Jul 19833 Aug 201015
Bakers Mill A11 Nov 198129 Jul 201016
Little Thurlow13 Oct 200028 Sept 20092
Mill Green Radial Gate16 Oct 198515 Sept 20099
Little Wratting2 Oct 19808 Sept 20099
Glemsford Pits14 Oct 198826 Aug 20098
Pentlow Street30 Sept 198521 Aug 20099
Kedington FGS8 Oct 198021 Aug 200910
Brundon (River Stour Middle)5 Oct 198810 Aug 20098
Rodbridge Park23 Sept 19816 Aug 20097
Shalford Meadow31 Jul 19855 Aug 20097
Priory Meadow29 Jul 19854 Aug 20099
Garnons Farm26 Jul 198316 Jul 200910
Wick Farm19 Jul 19883 Jul 20098
Brantham Lock12 Jun 198522 Jun 20097
Cattawade30 Aug 198316 Jun 20036
Dedham (Old) River24 Aug 198315 Sept 19942
Pitmire B26 Jul 198526 Jul 19851
Bures Bridge B12 Nov 198112 Nov 19811
Lamarsh FGS B15 Oct 198115 Oct 19811
Bakers Mill B6 Oct 19816 Oct 19811

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

1980–2026

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 11,197 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
10.5 cm
Median
13.1 cm
Upper quarter
17.1 cm
Largest
40.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 223 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.1 oz (0.002 kg)
Lower quarter
3.6 oz (0.102 kg)
Median
4.7 oz (0.134 kg)
Upper quarter
6.8 oz (0.1915 kg)
Heaviest
14.8 oz (0.42 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 Stour

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

Roach European eel Pike Chub 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 →