Bullhead · Cottus gobio

Bullhead in the Glynch Brook

Largest measured bullhead: 9.8 cm

The largest bullhead measured in Environment Agency surveys of the Glynch Brook was 9.8 cm, recorded at Stanbrook Farm on 25 June 2014.

Across 98 measured bullhead, the median measured length was 6.8 cm.

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

See bullhead records across England →

Most recent observation30 July 2024Stanbrook Farm

Largest measured bullhead: 9.8 cm
Median length: 6.8 cm
Fish measured: 98
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
9.8 cm	25 Jun 2014	Stanbrook Farm	141298
9.2 cm	25 Jun 2014	Stanbrook Farm	141298
9 cm	25 Jun 2014	Stanbrook Farm	141298
8.8 cm	21 Jul 1998	Clenchers Mill	23703
8.6 cm	21 Jul 1998	Clenchers Mill	23703
8.6 cm	25 Sept 1996	Pitts Mill	52316
8.6 cm	1 Oct 1986	Bromsberrow	80272
8.5 cm	25 Jun 2014	Stanbrook Farm	141298
8.4 cm	25 Jun 2014	Stanbrook Farm	141298
8.2 cm	25 Jun 2014	Stanbrook Farm	141298

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
Stanbrook Farm	22 Oct 1991	30 Jul 2024	10
Clenchers Mill	22 Oct 1991	26 Jul 2001	4
Pitts Mill	25 Sept 1996	25 Sept 1996	1
Upleadon Court	1 Oct 1986	1 Oct 1986	1
Bromsberrow	1 Oct 1986	1 Oct 1986	1

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

1986–2024

Survey records by year

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

286

087

088

089

090

291

092

093

094

195

296

097

198

099

000

101

002

003

004

005

006

007

108

009

110

011

112

013

114

015

116

017

118

019

020

121

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 98 measured fish were spread across different length ranges.

Smallest: 3 cm
Lower quarter: 5.6 cm
Median: 6.8 cm
Upper quarter: 7.6 cm
Largest: 9.8 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Glynch Brook

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

European eel Stone loach 3-spined stickleback Minnow Brown / sea trout Dace

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 →