RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the Main River Parrett

Largest measured ruffe: 12.7 cm

The largest ruffe measured in Environment Agency surveys of the Main River Parrett was 12.7 cm, recorded at Thorney Moor (Te) on 9 June 1994.

Across 73 measured ruffe, the median measured length was 7.9 cm.

Surveyors recorded weights for 36 ruffe. The median was 0.5 oz (0.014 kg) and the largest recorded weight was 1.3 oz (0.036 kg).

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Main River Parrett.

See ruffe records across England →

Most recent observation31 July 2014Thorney Moor (Te) · 4 fish
Largest measured ruffe
12.7 cm
Median length
7.9 cm
Fish measured
73
Survey locations
8

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
12.7 cm9 Jun 1994Thorney Moor (Te)79634
11.7 cm9 Jun 1994Thorney Moor (Te)79634
11 cm3 Oct 2013Oath Lock bye-pass channel142327
10.7 cm9 Jun 2005Thorney Moor (Te)84730
10.7 cm2 Jun 1994Downstream Gawbridge Mill79627
10.5 cm3 Oct 2013Oath Lock bye-pass channel142327
10.5 cm9 Jun 1994Thorney Moor (Te)79634
10.3 cm3 Oct 2013Oath Lock bye-pass channel142327
10.2 cm9 Jun 1994Thorney Moor (Te)79634
10.1 cm3 Oct 2013Oath Lock bye-pass channel142327

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
Thorney Moor (Te)9 Jun 199431 Jul 20147
Oath Lock bye-pass channel19 Sept 20133 Oct 20132
Combe22 Jun 200722 Jun 20071
Westover Bridge (Te)2 Oct 20032 Oct 20031
Upstream Muchelney21 Jun 199421 Jun 19941
Upstream Yeo Corner15 Jun 199415 Jun 19941
Downstream Langport Viaduct14 Jun 199414 Jun 19941
Downstream Gawbridge Mill2 Jun 19942 Jun 19941

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

1994–2014

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 73 measured fish were spread across different length ranges.

Smallest
5.8 cm
Lower quarter
6.7 cm
Median
7.9 cm
Upper quarter
9.3 cm
Largest
12.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 36 ruffe. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.2 oz (0.005 kg)
Lower quarter
0.3 oz (0.0098 kg)
Median
0.5 oz (0.014 kg)
Upper quarter
0.6 oz (0.016 kg)
Heaviest
1.3 oz (0.036 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Main River Parrett

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

European eel Minnow Stone loach Roach Bullhead 3-spined stickleback

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 →