Bullhead · Cottus gobio

Bullhead in the Chilsworthy Stream

Largest measured bullhead: 6.9 cm

The largest bullhead measured in Environment Agency surveys of the Chilsworthy Stream was 6.9 cm, recorded at Chilsworthy on 27 May 2016.

Across 40 measured bullhead, the median measured length was 5.3 cm.

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

See bullhead records across England →

Most recent observation10 June 2022Chilsworthy · 22 fish

Largest measured bullhead: 6.9 cm
Median length: 5.3 cm
Fish measured: 40
Survey locations: 1

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
6.9 cm	27 May 2016	Chilsworthy	148145
6.9 cm	27 May 2016	Chilsworthy	148145
6.7 cm	5 Jun 2018	Chilsworthy	154530
6.7 cm	27 May 2016	Chilsworthy	148145
6.6 cm	10 Jun 2022	Chilsworthy	161944
6.5 cm	27 May 2016	Chilsworthy	148145
6.3 cm	27 May 2016	Chilsworthy	148145
6.2 cm	5 Jun 2018	Chilsworthy	154530
6.2 cm	27 May 2016	Chilsworthy	148145
6.1 cm	5 Jun 2018	Chilsworthy	154530

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
Chilsworthy	19 Jun 1984	10 Jun 2022	9

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

1984–2022

Survey records by year

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

184

085

086

087

088

089

090

091

092

193

094

195

196

097

098

099

000

001

002

003

104

005

006

007

008

009

110

011

012

013

014

015

116

017

118

019

020

021

122

Fish measured by surveyors

Measured length distribution

See how the 40 measured fish were spread across different length ranges.

Smallest: 3.7 cm
Lower quarter: 4.6 cm
Median: 5.3 cm
Upper quarter: 6.1 cm
Largest: 6.9 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Chilsworthy Stream

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

Brown / sea trout 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 →