Bullhead · Cottus gobio

Bullhead in the St. Lawrence Stream

Largest measured bullhead: 8.8 cm

The largest bullhead measured in Environment Agency surveys of the St. Lawrence Stream was 8.8 cm, recorded at St. Lawrence on 3 July 2006.

Across 49 measured bullhead, the median measured length was 5.8 cm.

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

See bullhead records across England →

Most recent observation5 June 2019St. Lawrence · 10 fish

Largest measured bullhead: 8.8 cm
Median length: 5.8 cm
Fish measured: 49
Survey locations: 3

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
8.8 cm	3 Jul 2006	St. Lawrence	100050
8 cm	30 Jun 2011	St. Lawrence	126825
7.9 cm	3 Jul 2006	St. Lawrence	100050
7.7 cm	3 Jul 2006	St. Lawrence	100050
7.3 cm	3 Jul 2006	St. Lawrence	100050
7.3 cm	3 Jul 2006	St. Lawrence	100050
6.9 cm	14 Jun 2017	St. Lawrence	150715
6.8 cm	30 Jun 2011	St. Lawrence	126825
6.7 cm	30 Jun 2011	St. Lawrence	126825
6.7 cm	3 Jul 2006	St. Lawrence	100050

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
St. Lawrence	30 Jul 1980	5 Jun 2019	10
St. Lawrence Farm	21 Jul 2006	21 Jul 2006	1
Alice	5 Jul 1985	7 Jul 2000	5

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

1980–2019

Survey records by year

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

180

081

082

083

084

285

086

087

088

089

090

291

092

093

294

095

096

297

098

099

200

001

002

003

004

005

206

007

008

009

010

111

012

013

014

015

016

117

018

119

Fish measured by surveyors

Measured length distribution

See how the 49 measured fish were spread across different length ranges.

Smallest: 1.9 cm
Lower quarter: 5.5 cm
Median: 5.8 cm
Upper quarter: 6.4 cm
Largest: 8.8 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the St. Lawrence 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 →