Bullhead · Cottus gobio

Bullhead in the Brynn Stream

Largest measured bullhead: 7.6 cm

The largest bullhead measured in Environment Agency surveys of the Brynn Stream was 7.6 cm, recorded at Prince Park on 1 August 2017.

Across 184 measured bullhead, the median measured length was 4.7 cm.

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

See bullhead records across England →

Most recent observation26 July 2023Prince Park · 53 fish

Largest measured bullhead: 7.6 cm
Median length: 4.7 cm
Fish measured: 184
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
7.6 cm	1 Aug 2017	Prince Park	151235
7 cm	1 Aug 2017	Prince Park	151235
6.9 cm	26 Jul 2023	Prince Park	162805
6.9 cm	28 Jul 2011	Prince Park	127191
6.8 cm	28 Jul 2011	Prince Park	127191
6.7 cm	6 Jul 2006	Prince Park	100057
6.6 cm	6 Jul 2006	Prince Park	100057
6.5 cm	26 Jul 2023	Prince Park	162805
6.5 cm	28 Jul 2011	Prince Park	127191
6.5 cm	28 Jul 2011	Prince Park	127191

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
Prince Park	9 Jul 1985	26 Jul 2023	9
Blackhay	12 Jul 1985	8 Aug 2000	4

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

1985–2023

Survey records by year

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

285

086

087

088

089

090

291

092

093

194

095

096

297

098

099

200

001

002

003

004

005

106

007

008

009

010

111

012

013

014

015

016

117

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 184 measured fish were spread across different length ranges.

Smallest: 1.3 cm
Lower quarter: 2.7 cm
Median: 4.7 cm
Upper quarter: 5.7 cm
Largest: 7.6 cm

0–99 mm

184

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Brynn Stream

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

Brown / sea trout European eel Atlantic salmon

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 →