RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the River Timberland Delph

Largest measured ruffe: 10.2 cm

The largest ruffe measured in Environment Agency surveys of the River Timberland Delph was 10.2 cm, recorded at Delph Outfall Upstream Timberland on 1 July 1991.

Across 72 measured ruffe, the median measured length was 8.2 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 Timberland Delph.

See ruffe records across England →

Most recent observation30 June 2011Delph Outfall Upstream Timberland · 1 fish
Largest measured ruffe
10.2 cm
Median length
8.2 cm
Fish measured
72
Survey locations
2

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
10.2 cm1 Jul 1991Delph Outfall Upstream Timberland53242
10.1 cm2 Apr 1985Delph Outfall Upstream Timberland53055
9.8 cm9 Jul 1991Timberland Fen Upstream53241
9.7 cm9 Jul 1991Timberland Fen Upstream53241
9.6 cm9 Jul 1991Timberland Fen Upstream53241
9.5 cm9 Jul 1991Timberland Fen Upstream53241
9.3 cm9 Jul 1991Timberland Fen Upstream53241
9.3 cm9 Jul 1991Timberland Fen Upstream53241
9.3 cm9 Jul 1991Timberland Fen Upstream53241
9.3 cm1 Jul 1991Delph Outfall Upstream Timberland53242

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
Delph Outfall Upstream Timberland2 Apr 198530 Jun 201110
Timberland Fen Upstream9 Jul 19916 Jul 19982

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

1985–2011

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 72 measured fish were spread across different length ranges.

Smallest
4.9 cm
Lower quarter
7.1 cm
Median
8.2 cm
Upper quarter
8.8 cm
Largest
10.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Timberland Delph

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

Perch Pike Roach Common bream Silver bream 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 →