Bullhead · Cottus gobio

Bullhead in the Brinkworth Brook

Largest measured bullhead: 9.7 cm

The largest bullhead measured in Environment Agency surveys of the Brinkworth Brook was 9.7 cm, recorded at Knights Farm on 15 April 2014.

Across 430 measured bullhead, the median measured length was 4.7 cm.

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

See bullhead records across England →

Most recent observation15 April 2014Knights Farm · 135 fish

Largest measured bullhead: 9.7 cm
Median length: 4.7 cm
Fish measured: 430
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
9.7 cm	15 Apr 2014	Knights Farm	140699
9.6 cm	9 Oct 2013	Knights Farm	139312
9.5 cm	15 Apr 2014	u/s Brinkworth Bridge	140698
9.2 cm	15 Apr 2014	u/s Brinkworth Bridge	140698
9.1 cm	15 Apr 2014	Knights Farm	140699
9 cm	15 Apr 2014	Knights Farm	140699
8.9 cm	15 Apr 2014	Knights Farm	140699
8.8 cm	15 Apr 2014	Knights Farm	140699
8.6 cm	15 Apr 2014	u/s Brinkworth Bridge	140698
8.5 cm	9 Oct 2013	Knights Farm	139312

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
u/s Brinkworth Bridge	15 Apr 2014	15 Apr 2014	1
Knights Farm	9 Oct 2013	15 Apr 2014	2
Somerford Bridge (Te)	21 Jul 1993	27 Apr 2010	5
Brinkworth	29 Jul 1993	29 Jul 1993	1
Hookers Gate	28 Jul 1993	28 Jul 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.

393

094

095

096

097

098

099

000

001

002

103

104

105

006

007

008

009

110

011

012

113

214

Fish measured by surveyors

Measured length distribution

See how the 430 measured fish were spread across different length ranges.

Smallest: 2.3 cm
Lower quarter: 4.1 cm
Median: 4.7 cm
Upper quarter: 6.1 cm
Largest: 9.7 cm

0–99 mm

430

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Brinkworth Brook

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

Stone loach Minnow 3-spined stickleback Chub Dace 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 →