RiverFish

Perch · Perca fluviatilis

Perch in the River Medway

Largest measured perch: 40.8 cm

The largest perch measured in Environment Agency surveys of the River Medway was 40.8 cm, recorded at Tovil on 24 July 2024.

Across 3,445 measured perch, the median measured length was 9 cm.

Surveyors recorded weights for 63 perch. The median was 1.2 oz (0.035 kg) and the largest recorded weight was 1 lb 9.3 oz (0.717 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 Medway.

See perch records across England →

Most recent observation21 July 2026Sovereign Way Tonbridge · 1 fish
Largest measured perch
40.8 cm
Median length
9 cm
Fish measured
3,445
Survey locations
18

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
40.8 cm24 Jul 2024Tovil166180
38.9 cm15 Jul 2026Tovil182294
38.1 cm9 Aug 2023D/s Weirwood Reservoir163083
37.7 cm6 Aug 2009D/s Ashurst Road Bridge119593
37.4 cm14 Aug 2012D/s Weirwood Reservoir132885
36.6 cm10 Aug 2004D/s Ashurst Road Bridge82696
36.1 cm8 Aug 2019D/s Ashurst Road Bridge155187
35.7 cm6 Sept 2022Golden Green161425
35.5 cm22 Aug 2024Golden Green166496
35.2 cm23 Sept 2002Bewleys Weir72757

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
Sovereign Way Tonbridge1 Sept 201021 Jul 202615
Golden Green7 Sept 200516 Jul 202616
Tovil16 Nov 200615 Jul 202614
Yalding Leas27 Sept 200418 Jun 202617
Penshurst22 Nov 200116 Oct 202519
Fordcombe14 Nov 200115 Oct 202519
D/s Ashurst Road Bridge22 Aug 200118 Sept 202520
D/s Weirwood Reservoir19 Jul 20019 Sept 202522
Teston9 Nov 200625 Aug 202514
Hampstead Lock Juvenile Fish Seine Netting Survey15 Jun 201828 May 20256
Hartfield23 Aug 200115 Oct 202413
Tonbridge Juvenile Fish Seine Netting Survey20 Jul 201230 Aug 202311
Maidstone Juvenile Fish Seine Netting Survey20 Jul 20124 Jun 20198
Yalding Juvenile Fish Seine Netting Survey26 Jul 201326 Jul 20131
Bewleys Weir23 Sept 20023 Sept 20098
Grom/Medway Confluence u/s9 Oct 20079 Oct 20071
Grom/Medway Confluence d/s9 Oct 20079 Oct 20071
Gallypot3 Oct 20073 Oct 20071

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

2001–2026

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 3,445 measured fish were spread across different length ranges.

Smallest
1.2 cm
Lower quarter
6.1 cm
Median
9 cm
Upper quarter
13.6 cm
Largest
40.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 63 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.2 oz (0.005 kg)
Lower quarter
0.6 oz (0.018 kg)
Median
1.2 oz (0.035 kg)
Upper quarter
3.9 oz (0.111 kg)
Heaviest
1 lb 9.3 oz (0.717 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 Medway

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

Chub Gudgeon Roach Bleak Dace Minnow

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 →