Bullhead · Cottus gobio

Bullhead in the River Dudwell

Largest measured bullhead: 8.1 cm

The largest bullhead measured in Environment Agency surveys of the River Dudwell was 8.1 cm, recorded at Willingford Farm on 31 July 2013.

Across 89 measured bullhead, the median measured length was 6 cm.

Surveyors recorded weights for 30 bullhead. The median was 0.2 oz (0.006 kg) and the largest recorded weight was 0.3 oz (0.008 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 Dudwell.

See bullhead records across England →

Most recent observation31 August 2016Willingford Farm · 4 fish

Largest measured bullhead: 8.1 cm
Median length: 6 cm
Fish measured: 89
Survey locations: 2

Individual EA measurements

Largest measured bullhead

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

Length	Survey date	Survey location	Survey ID
8.1 cm	31 Jul 2013	Willingford Farm	137634
7.8 cm	31 Jul 2013	Willingford Farm	137634
7.7 cm	31 Jul 2013	Willingford Farm	137634
7.7 cm	31 Jul 2013	Willingford Farm	137634
7.7 cm	31 Jul 2013	Willingford Farm	137634
7.7 cm	31 Jul 2013	Willingford Farm	137634
7.5 cm	25 Jul 2005	Willingford Farm	87455
7.5 cm	26 Sept 2002	Willingford Farm	67161
7.5 cm	19 Sept 2002	Riverdell Farm	72794
7.4 cm	19 Sept 2002	Riverdell Farm	72794

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

Explore the river

Where bullhead were found

Each point marks a survey location with at least one bullhead 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 surveyed	First recorded	Last recorded	Visits finding bullhead
Willingford Farm	26 Sept 2002	31 Aug 2016	5
Riverdell Farm	19 Sept 2002	19 Sept 2002	1

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

2002–2016

Survey records by year

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

202

003

004

105

006

007

008

009

110

011

012

113

014

015

116

Fish measured by surveyors

Measured length distribution

See how the 89 measured fish were spread across different length ranges.

Smallest: 2.2 cm
Lower quarter: 5.2 cm
Median: 6 cm
Upper quarter: 6.6 cm
Largest: 8.1 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 30 bullhead. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.002 kg)
Lower quarter: 0.2 oz (0.005 kg)
Median: 0.2 oz (0.006 kg)
Upper quarter: 0.2 oz (0.006 kg)
Heaviest: 0.3 oz (0.008 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 Dudwell

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

Brown / sea trout Stone loach

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 →