Bullhead · Cottus gobio

Bullhead in the Whitewell Brook

Largest measured bullhead: 9.3 cm

The largest bullhead measured in Environment Agency surveys of the Whitewell Brook was 9.3 cm, recorded at Iwwh05 on 12 July 2002.

Across 32 measured bullhead, the median measured length was 7.3 cm.

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

See bullhead records across England →

Most recent observation18 July 2024Iwwh01

Largest measured bullhead: 9.3 cm
Median length: 7.3 cm
Fish measured: 32
Survey locations: 5

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
9.3 cm	12 Jul 2002	Iwwh05	60603
9.1 cm	12 Jul 2002	Iwwh05	60603
9 cm	12 Jul 2002	Iwwh05	60603
8.9 cm	12 Jul 2002	Iwwh05	60603
8.9 cm	12 Jul 2002	Iwwh05	60603
8.4 cm	12 Jul 2002	Iwwh05	60603
8.4 cm	12 Jul 2002	Iwwh05	60603
8.4 cm	12 Jul 2002	Iwwh05	60603
8.3 cm	12 Jul 2002	Iwwh05	60603
8.3 cm	12 Jul 2002	Iwwh05	60603

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
Iwwh01	4 Nov 1996	18 Jul 2024	12
Iwwh03	1 Aug 1996	26 Jun 2023	2
Iwwh05	12 Jul 2002	12 Jul 2002	1
Ww06	13 Nov 1996	13 Nov 1996	1
Ww05	13 Nov 1996	13 Nov 1996	1

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

1996–2024

Survey records by year

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

496

097

098

099

000

001

102

003

004

005

006

007

008

009

110

111

112

113

114

115

116

117

118

019

020

021

122

123

124

Fish measured by surveyors

Measured length distribution

See how the 32 measured fish were spread across different length ranges.

Smallest: 3.5 cm
Lower quarter: 6.3 cm
Median: 7.3 cm
Upper quarter: 8.3 cm
Largest: 9.3 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Whitewell Brook

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

Brown / sea trout

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 →