Bullhead · Cottus gobio

Bullhead in the Sandon Brook (West Arm)

Largest measured bullhead: 9 cm

The largest bullhead measured in Environment Agency surveys of the Sandon Brook (West Arm) was 9 cm, recorded at Down House Farm on 20 February 1998.

Across 34 measured bullhead, the median measured length was 6.2 cm.

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

See bullhead records across England →

Most recent observation15 February 2012Down House Farm · 1 fish

Largest measured bullhead: 9 cm
Median length: 6.2 cm
Fish measured: 34
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 cm	20 Feb 1998	Down House Farm	13419
8.2 cm	7 Mar 2005	Sandon A12	84220
8.2 cm	14 Feb 2005	Down House Farm	84209
8.1 cm	7 Mar 2005	Sandon A12	84220
7.9 cm	24 Feb 1998	Sandon A12	13416
7.3 cm	7 Mar 2005	Sandon A12	84220
7.1 cm	7 Mar 2005	Sandon A12	84220
7 cm	7 Mar 2005	Sandon A12	84220
7 cm	20 Feb 1998	Down House Farm	13419
6.8 cm	7 Mar 2005	Sandon A12	84220

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
Down House Farm	20 Feb 1998	15 Feb 2012	3
Sandon A12	24 Feb 1998	7 Mar 2005	2

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

1998–2012

Survey records by year

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

298

099

000

001

002

003

004

205

006

007

008

009

010

011

112

Fish measured by surveyors

Measured length distribution

See how the 34 measured fish were spread across different length ranges.

Smallest: 4.1 cm
Lower quarter: 5.3 cm
Median: 6.2 cm
Upper quarter: 7 cm
Largest: 9 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Sandon Brook (West Arm)

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

Gudgeon Minnow

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 →