Bullhead · Cottus gobio

Bullhead in the River Cam

Largest measured bullhead: 10.4 cm

The largest bullhead measured in Environment Agency surveys of the River Cam was 10.4 cm, recorded at Pumping station downstream to Wicksters brook conf on 25 May 2016.

Across 207 measured bullhead, the median measured length was 6.3 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 Cam.

See bullhead records across England →

Most recent observation9 June 2016River Cam Lister Petter site unculverted section 3

Largest measured bullhead: 10.4 cm
Median length: 6.3 cm
Fish measured: 207
Survey locations: 13

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
10.4 cm	25 May 2016	Pumping station downstream to Wicksters brook conf	148084
10.3 cm	21 Oct 1996	Dursley, Yellow Hundred	23631
9.5 cm	6 Jul 1992	Dursley, Yellow Hundred	24350
9.2 cm	21 Jul 2014	Draycott Mills	141884
9.2 cm	21 Oct 1996	Dursley, Yellow Hundred	23631
9.2 cm	21 Oct 1996	Dursley, Yellow Hundred	23631
9.2 cm	12 Sept 1989	Dursley, Yellow Hundred	24324
9.1 cm	12 Sept 1989	Dursley, Yellow Hundred	24324
9.1 cm	12 Sept 1989	Dursley, Yellow Hundred	24324
9 cm	21 Oct 1996	Dursley, Yellow Hundred	23631

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
River Cam Lister Petter site unculverted section 3	30 May 2007	9 Jun 2016	4
Pumping station downstream to Wicksters brook conf	25 May 2016	25 May 2016	1
Middle Mills	21 Jul 2014	21 Jul 2014	1
Draycott Mills	21 Jul 2014	21 Jul 2014	1
Cambridge, u/s weir	24 May 2012	24 May 2012	1
Cambridge d/s gauging weir	24 May 2012	24 May 2012	1
River Cam Section 2	20 May 2008	20 May 2008	1
River Cam Section 1	20 May 2008	20 May 2008	1
Dursley, Yellow Hundred	12 Sept 1989	11 Sept 2001	5
Uley, Rockstowes	21 Oct 1996	21 Oct 1996	1
Draycott Farm	16 Oct 1996	16 Oct 1996	1
Coaley d/s weir u/s WRW	16 Oct 1996	16 Oct 1996	1
old Hopton Court School site	27 Jul 1992	27 Jul 1992	1

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

1989–2016

Survey records by year

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

189

090

091

292

093

094

195

496

097

098

099

000

101

002

003

004

005

006

107

308

009

010

111

212

013

214

015

216

Fish measured by surveyors

Measured length distribution

See how the 207 measured fish were spread across different length ranges.

Smallest: 2 cm
Lower quarter: 5.3 cm
Median: 6.3 cm
Upper quarter: 7.4 cm
Largest: 10.4 cm

0–99 mm

205

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Cam

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

European eel Brown / sea trout 3-spined stickleback Roach Perch 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 →