Bullhead · Cottus gobio

Bullhead in the Main Horner Water

Largest measured bullhead: 10.5 cm

The largest bullhead measured in Environment Agency surveys of the Main Horner Water was 10.5 cm, recorded at Upstream East Water on 20 September 1993.

Across 550 measured bullhead, the median measured length was 6.6 cm.

Surveyors recorded weights for 59 bullhead. The median was 0.2 oz (0.006 kg) and the largest recorded weight was 0.6 oz (0.016 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 Horner Water.

See bullhead records across England →

Most recent observation30 April 2014Lang Combe (d/s Pool Bridge) (Se-02) · 2 fish

Largest measured bullhead: 10.5 cm
Median length: 6.6 cm
Fish measured: 550
Survey locations: 5

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
10.5 cm	20 Sept 1993	Upstream East Water	80164
10.1 cm	8 Sept 1993	Burrowhayes Farm	80194
9.6 cm	20 Sept 1993	Upstream East Water	80164
9.5 cm	20 Sept 1993	Upstream East Water	80164
9.4 cm	12 Apr 2012	Bossington (WFD)	131097
9.2 cm	8 Sept 1993	Burrowhayes Farm	80194
9.1 cm	20 Sept 1993	Upstream East Water	80164
9.1 cm	8 Sept 1993	Burrowhayes Farm	80194
9 cm	30 Apr 2014	Lang Combe (d/s Pool Bridge) (Se-02)	140712
9 cm	20 Sept 1993	Upstream East Water	80164

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
Lang Combe (d/s Pool Bridge) (Se-02)	16 Aug 2002	30 Apr 2014	4
Bossington (WFD)	5 Apr 2006	23 Apr 2014	9
Rey Combe	22 Jul 2010	22 Jul 2010	1
Upstream East Water	20 Sept 1993	20 Sept 1993	1
Burrowhayes Farm	8 Sept 1993	8 Sept 1993	1

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

1993–2014

Survey records by year

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

293

094

095

096

097

098

099

000

001

102

003

004

005

206

107

108

109

310

111

112

113

214

Fish measured by surveyors

Measured length distribution

See how the 550 measured fish were spread across different length ranges.

Smallest: 1.4 cm
Lower quarter: 5.5 cm
Median: 6.6 cm
Upper quarter: 7.3 cm
Largest: 10.5 cm

0–99 mm

548

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 59 bullhead. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0 oz (0.001 kg)
Median: 0.2 oz (0.006 kg)
Upper quarter: 0.3 oz (0.008 kg)
Heaviest: 0.6 oz (0.016 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 Horner Water

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

Brown / sea trout European eel Brook lamprey

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 →