RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Medway

Largest measured minnow: 10 cm

The largest minnow measured in Environment Agency surveys of the River Medway was 10 cm, recorded at D/s Weirwood Reservoir on 12 May 2004.

Across 2,355 measured minnow, the median measured length was 5.4 cm.

Surveyors recorded weights for 56 minnow. The median was 0.1 oz (0.004 kg) and the largest recorded weight was 0.3 oz (0.009 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 minnow records across England →

Most recent observation21 July 2026Sovereign Way Tonbridge
Largest measured minnow
10 cm
Median length
5.4 cm
Fish measured
2,355
Survey locations
17

Individual EA measurements

Largest measured minnow

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

LengthSurvey dateSurvey locationSurvey ID
10 cm12 May 2004D/s Weirwood Reservoir80045
9.7 cm26 Sept 2013Hartfield138927
9.7 cm23 Aug 2001Hartfield22484
9.5 cm1 Sept 2016Hartfield149137
9.4 cm15 Aug 2012Hartfield132882
9.4 cm12 May 2004D/s Weirwood Reservoir80045
9.1 cm15 Aug 2012Hartfield132882
9 cm29 May 2007Hartfield106462
8.9 cm11 Sept 2018Hartfield153397
8.9 cm1 Sept 2016Hartfield149137

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

Explore the river

Where minnow were found

Each point marks a survey location with at least one minnow 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 minnow
Sovereign Way Tonbridge1 Sept 201021 Jul 202610
Hartfield23 Aug 200123 Oct 202523
Penshurst22 Nov 200116 Oct 202521
Fordcombe14 Nov 200115 Oct 202521
D/s Ashurst Road Bridge22 Aug 200118 Sept 202522
Golden Green20 Aug 200930 Jul 20254
Teston18 Jul 202318 Jul 20231
Ashdown House Farm11 Aug 201125 Aug 20162
Tonbridge Juvenile Fish Seine Netting Survey20 Jul 20128 Aug 20164
Tonbridge Juvenile Fish Kick Sampling Survey20 Jul 20128 Aug 20162
Yalding Juvenile Fish Seine Netting Survey21 Sept 20124 Jul 20165
D/s Weirwood Reservoir19 Jul 200111 Sept 20146
Maidstone Juvenile Fish Kick Sampling Survey30 Aug 20122 Sept 20132
Grom/Medway Confluence u/s9 Oct 20079 Oct 20071
Grom/Medway Confluence d/s9 Oct 20079 Oct 20071
Gallypot12 Apr 20043 Oct 20072
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 minnow that year.

Fish measured by surveyors

Measured length distribution

See how the 2,355 measured fish were spread across different length ranges.

Smallest
1 cm
Lower quarter
4.4 cm
Median
5.4 cm
Upper quarter
6.3 cm
Largest
10 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 56 minnow. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.1 oz (0.002 kg)
Median
0.1 oz (0.004 kg)
Upper quarter
0.1 oz (0.004 kg)
Heaviest
0.3 oz (0.009 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 Perch Bleak Dace

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 →