Bullhead · Cottus gobio

Bullhead in the Ulley Brook

Largest measured bullhead: 10 cm

The largest bullhead measured in Environment Agency surveys of the Ulley Brook was 10 cm, recorded at Downstream Ulley Reservoir (A618) on 18 September 2017.

Across 12 measured bullhead, the median measured length was 7.5 cm.

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

See bullhead records across England →

Most recent observation18 September 2017Downstream Ulley Reservoir (A618) · 9 fish

Largest measured bullhead: 10 cm
Median length: 7.5 cm
Fish measured: 12
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
10 cm	18 Sept 2017	Downstream Ulley Reservoir (A618)	151752
9.4 cm	18 Sept 2017	Downstream Ulley Reservoir (A618)	151752
8.5 cm	18 Sept 2017	Downstream Ulley Reservoir (A618)	151752
8.4 cm	18 Sept 2017	Downstream Ulley Reservoir (A618)	151752
8.1 cm	18 Sept 2017	Downstream Ulley Reservoir (A618)	151752
7.5 cm	18 Sept 2017	Downstream Ulley Reservoir (A618)	151752
7.5 cm	22 Sept 2011	Downstream Ulley Reservoir (A618)	129013
7 cm	18 Sept 2017	Downstream Ulley Reservoir (A618)	151752
6.8 cm	22 Sept 2011	Downstream Ulley Reservoir (A618)	129013
6.4 cm	22 Sept 2011	Downstream Ulley Reservoir (A618)	129013

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
Downstream Ulley Reservoir (A618)	8 Sept 2006	18 Sept 2017	3
Ulley Brook at Guilthwaite	28 Jan 1985	9 May 2002	2

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

1985–2017

Survey records by year

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

185

086

087

088

089

090

091

092

093

094

095

096

097

098

099

000

001

102

003

004

005

106

007

008

009

010

111

012

013

014

015

016

117

Fish measured by surveyors

Measured length distribution

See how the 12 measured fish were spread across different length ranges.

Smallest: 5 cm
Lower quarter: 6.7 cm
Median: 7.5 cm
Upper quarter: 8.4 cm
Largest: 10 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

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 →