Bullhead · Cottus gobio

Bullhead in the Hoo Brook

Largest measured bullhead: 10 cm

The largest bullhead measured in Environment Agency surveys of the Hoo Brook was 10 cm, recorded at DS car park Spennels Nature Reserve on 30 June 2015.

Across 113 measured bullhead, the median measured length was 7.4 cm.

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

See bullhead records across England →

Most recent observation30 June 2015US car park Spennels Nature Reserve · 32 fish

Largest measured bullhead: 10 cm
Median length: 7.4 cm
Fish measured: 113
Survey locations: 4

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 cm	30 Jun 2015	DS car park Spennels Nature Reserve	145253
9.8 cm	30 Jun 2015	DS car park Spennels Nature Reserve	145253
9.7 cm	30 Jun 2015	US car park Spennels Nature Reserve	145260
9.7 cm	30 Jun 2015	DS car park Spennels Nature Reserve	145253
9.6 cm	30 Jun 2015	US car park Spennels Nature Reserve	145260
9.6 cm	25 Jun 2013	US car park Spennels Nature Reserve	138124
9.5 cm	25 Jun 2013	US car park Spennels Nature Reserve	138124
9.4 cm	30 Jun 2015	US car park Spennels Nature Reserve	145260
9.4 cm	30 Jun 2015	DS car park Spennels Nature Reserve	145253
9 cm	30 Jun 2015	US car park Spennels Nature Reserve	145260

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
US car park Spennels Nature Reserve	25 Jun 2013	30 Jun 2015	2
DS car park Spennels Nature Reserve	25 Jun 2013	30 Jun 2015	2
Stone/Dunclent Farm	16 May 1991	11 Apr 2000	2
Hill Pool	11 Apr 2000	11 Apr 2000	1

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

1991–2015

Survey records by year

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

191

092

093

094

095

096

097

098

099

200

001

002

003

004

005

006

007

008

009

010

011

012

213

014

215

Fish measured by surveyors

Measured length distribution

See how the 113 measured fish were spread across different length ranges.

Smallest: 1.7 cm
Lower quarter: 5.8 cm
Median: 7.4 cm
Upper quarter: 8.3 cm
Largest: 10 cm

0–99 mm

112

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Hoo Brook

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

Brown / sea trout Perch Roach European eel 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 →