Bullhead · Cottus gobio

Bullhead in the Belchamp Brook (Headwaters)

Largest measured bullhead: 9.5 cm

The largest bullhead measured in Environment Agency surveys of the Belchamp Brook (Headwaters) was 9.5 cm, recorded at Belchamp Walter Hall on 20 January 2016.

Across 121 measured bullhead, the median measured length was 5.9 cm.

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

See bullhead records across England →

Most recent observation20 January 2016Nether Hall · 6 fish

Largest measured bullhead: 9.5 cm
Median length: 5.9 cm
Fish measured: 121
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
9.5 cm	20 Jan 2016	Belchamp Walter Hall	147867
9 cm	28 Feb 1997	Nether Hall	13363
8.9 cm	25 Mar 2010	Nether Hall	121348
8.6 cm	6 Jan 2004	Belchamp Walter Hall	79386
8.5 cm	20 Jan 2016	Nether Hall	147868
8.2 cm	6 Jan 2004	Nether Hall	79382
8.2 cm	28 Feb 1997	Nether Hall	13363
7.9 cm	20 Jan 2016	Nether Hall	147868
7.9 cm	28 Feb 1997	Nether Hall	13363
7.8 cm	25 Mar 2010	Belchamp Walter Hall	121349

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
Nether Hall	28 Feb 1997	20 Jan 2016	4
Belchamp Walter Hall	28 Feb 1997	20 Jan 2016	4

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

1997–2016

Survey records by year

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

297

098

099

000

001

002

003

204

005

006

007

008

009

210

011

012

013

014

015

216

Fish measured by surveyors

Measured length distribution

See how the 121 measured fish were spread across different length ranges.

Smallest: 2.9 cm
Lower quarter: 5 cm
Median: 5.9 cm
Upper quarter: 7 cm
Largest: 9.5 cm

0–99 mm

121

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Belchamp Brook (Headwaters)

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

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 →