Bullhead · Cottus gobio

Bullhead in the Alledge Brook

Largest measured bullhead: 8.5 cm

The largest bullhead measured in Environment Agency surveys of the Alledge Brook was 8.5 cm, recorded at Woodford on 4 April 2006.

Across 47 measured bullhead, the median measured length was 6.5 cm.

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

See bullhead records across England →

Most recent observation8 June 2018Woodford

Largest measured bullhead: 8.5 cm
Median length: 6.5 cm
Fish measured: 47
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
8.5 cm	4 Apr 2006	Woodford	101922
8.5 cm	4 Apr 2006	Woodford	101922
8 cm	4 Apr 2006	Woodford	101922
8 cm	4 Apr 2006	Woodford	101922
7.5 cm	4 Apr 2006	Woodford	101922
7.5 cm	4 Apr 2006	Woodford	101922
7.5 cm	4 Apr 2006	Woodford	101922
7.5 cm	4 Apr 2006	Woodford	101922
7 cm	4 Apr 2006	Woodford	101922
7 cm	4 Apr 2006	Woodford	101922

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
Woodford	21 Mar 1995	8 Jun 2018	4
Cranford	30 Mar 1995	30 Mar 1995	1

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

1995–2018

Survey records by year

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

295

096

097

098

099

000

101

002

003

004

005

106

007

008

009

010

011

012

013

014

015

016

017

118

Fish measured by surveyors

Measured length distribution

See how the 47 measured fish were spread across different length ranges.

Smallest: 3.5 cm
Lower quarter: 6 cm
Median: 6.5 cm
Upper quarter: 7 cm
Largest: 8.5 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Alledge Brook

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

Brown / sea trout Perch

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 →