RiverFish

Chub · Leuciscus cephalus

Chub in the River Medway

Largest measured chub: 63.3 cm

The largest chub measured in Environment Agency surveys of the River Medway was 63.3 cm, recorded at D/s Ashurst Road Bridge on 18 August 2003.

Across 4,170 measured chub, the median measured length was 13.5 cm.

Surveyors recorded weights for 175 chub. The median was 9.6 oz (0.271 kg) and the largest recorded weight was 5 lb 8.2 oz (2.5 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 chub records across England →

Most recent observation21 July 2026Sovereign Way Tonbridge · 29 fish
Largest measured chub
63.3 cm
Median length
13.5 cm
Fish measured
4,170
Survey locations
22

Individual EA measurements

Largest measured chub

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
63.3 cm18 Aug 2003D/s Ashurst Road Bridge77759
62 cm18 Aug 2003D/s Ashurst Road Bridge77759
54.7 cm15 Aug 2003Fordcombe77770
53.5 cm20 Jun 2007Golden Green106408
52.9 cm2 Aug 2012Sovereign Way Tonbridge132602
52 cm22 Jul 2002Fordcombe66260
50.5 cm15 Sept 2011Fordcombe128522
50.1 cm29 Jul 2014East Farleigh142475
49.2 cm5 Sept 2019Fordcombe155359
49 cm18 Sept 2024D/s Ashurst Road Bridge168465

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where chub were found

Each point marks a survey location with at least one chub 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 chub
Sovereign Way Tonbridge1 Sept 201021 Jul 202615
Golden Green7 Sept 200516 Jul 202617
Tovil16 Nov 200615 Jul 202610
Teston21 Jul 200815 Jul 202611
Yalding Leas27 Sept 200418 Jun 202614
Hartfield23 Aug 200123 Oct 202511
Penshurst22 Nov 200116 Oct 202522
Fordcombe14 Nov 200115 Oct 202523
D/s Ashurst Road Bridge22 Aug 200118 Sept 202523
D/s Weirwood Reservoir19 Jul 20019 Sept 202512
Maidstone Juvenile Fish Seine Netting Survey30 Aug 201228 May 202511
Hampstead Lock Juvenile Fish Seine Netting Survey15 Jun 201828 May 20259
Tonbridge Juvenile Fish Seine Netting Survey20 Jul 201230 Aug 202313
Hampstead Lock Juvenile Fish Kick Sampling Survey17 Aug 201817 Aug 20181
Yalding Juvenile Fish Seine Netting Survey21 Sept 20124 Jul 20168
East Farleigh29 Jul 201429 Jul 20141
Maidstone Juvenile Fish Kick Sampling Survey30 Aug 201221 Sept 20122
Tonbridge Juvenile Fish Kick Sampling Survey20 Jul 201220 Jul 20121
Bewleys Weir23 Sept 20023 Sept 20098
Grom/Medway Confluence u/s9 Oct 20079 Oct 20071
Gallypot3 Oct 20073 Oct 20071
Ham Farm25 Sept 200225 Sept 20021

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 chub that year.

Fish measured by surveyors

Measured length distribution

See how the 4,170 measured fish were spread across different length ranges.

Smallest
0.8 cm
Lower quarter
4.4 cm
Median
13.5 cm
Upper quarter
22.3 cm
Largest
63.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 175 chub. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.1 oz (0.002 kg)
Lower quarter
5.1 oz (0.144 kg)
Median
9.6 oz (0.271 kg)
Upper quarter
1 lb 0.8 oz (0.477 kg)
Heaviest
5 lb 8.2 oz (2.5 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.

Gudgeon Roach Perch 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 →