Bullhead · Cottus gobio

Bullhead in the Fleet

Largest measured bullhead: 10 cm

The largest bullhead measured in Environment Agency surveys of the Fleet was 10 cm, recorded at Girton on 7 June 2013.

Across 89 measured bullhead, the median measured length was 6.3 cm.

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

See bullhead records across England →

Most recent observation22 May 2019Girton · 33 fish

Largest measured bullhead: 10 cm
Median length: 6.3 cm
Fish measured: 89
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
10 cm	7 Jun 2013	Girton	139881
9.6 cm	25 Jun 2015	Girton	145280
9.4 cm	25 Jun 2015	Girton	145280
9.3 cm	25 Jun 2015	Girton	145280
9.2 cm	17 Jun 2011	Girton	126604
9 cm	24 May 2017	Girton	150427
9 cm	25 Jun 2015	Girton	145280
8.7 cm	25 Jun 2015	Girton	145280
8.2 cm	24 May 2017	Girton	150427
8.2 cm	25 Jun 2015	Girton	145280

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
Girton	17 Jun 2011	22 May 2019	5

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

2011–2019

Survey records by year

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

111

012

113

014

115

016

117

018

119

Fish measured by surveyors

Measured length distribution

See how the 89 measured fish were spread across different length ranges.

Smallest: 2 cm
Lower quarter: 5.5 cm
Median: 6.3 cm
Upper quarter: 7.3 cm
Largest: 10 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Fleet

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

European eel Roach Spined loach Perch 3-spined stickleback Gudgeon

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 →