RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the River Medway

Largest measured ruffe: 14.2 cm

The largest ruffe measured in Environment Agency surveys of the River Medway was 14.2 cm, recorded at Sovereign Way Tonbridge on 30 October 2018.

Across 151 measured ruffe, the median measured length was 6.2 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 Medway.

See ruffe records across England →

Most recent observation21 July 2026Sovereign Way Tonbridge · 1 fish
Largest measured ruffe
14.2 cm
Median length
6.2 cm
Fish measured
151
Survey locations
9

Individual EA measurements

Largest measured ruffe

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

LengthSurvey dateSurvey locationSurvey ID
14.2 cm30 Oct 2018Sovereign Way Tonbridge153971
13.6 cm14 Sept 2011Sovereign Way Tonbridge128523
13.3 cm10 Sept 2024Sovereign Way Tonbridge168455
13.3 cm4 Sept 2014Sovereign Way Tonbridge142591
13.3 cm2 Aug 2012Sovereign Way Tonbridge132602
13.2 cm30 Oct 2018Sovereign Way Tonbridge153971
13 cm28 Aug 2025Sovereign Way Tonbridge178698
12.8 cm1 Sept 2010Sovereign Way Tonbridge125441
12.4 cm14 Sept 2022Sovereign Way Tonbridge161895
12.4 cm3 Sept 2009Bewleys Weir120424

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

Explore the river

Where ruffe were found

Each point marks a survey location with at least one ruffe 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 ruffe
Sovereign Way Tonbridge1 Sept 201021 Jul 202615
Teston9 Nov 200615 Jul 20263
Maidstone Juvenile Fish Seine Netting Survey2 Jul 201528 May 20258
Hampstead Lock Juvenile Fish Seine Netting Survey4 Jun 201928 May 20252
Golden Green22 Aug 202422 Aug 20241
Tonbridge Juvenile Fish Seine Netting Survey25 Jun 202425 Jun 20241
Tovil22 Aug 20177 Sept 20222
Yalding Leas27 Sept 20046 Sept 20224
Bewleys Weir19 Sept 20063 Sept 20092

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

2004–2026

Survey records by year

Each bar shows how many survey visits recorded ruffe that year.

Fish measured by surveyors

Measured length distribution

See how the 151 measured fish were spread across different length ranges.

Smallest
0.8 cm
Lower quarter
2 cm
Median
6.2 cm
Upper quarter
9.6 cm
Largest
14.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

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 →