RiverFish

Bullhead · Cottus gobio

Bullhead in the River Gadder

Largest measured bullhead: 8 cm

The largest bullhead measured in Environment Agency surveys of the River Gadder was 8 cm, recorded at DS Gooderstone on 24 February 2012.

Across 70 measured bullhead, the median measured length was 5.5 cm.

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

See bullhead records across England →

Most recent observation2 May 2024DS Gooderstone · 4 fish
Largest measured bullhead
8 cm
Median length
5.5 cm
Fish measured
70
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.

LengthSurvey dateSurvey locationSurvey ID
8 cm24 Feb 2012DS Gooderstone130132
7.5 cm8 Feb 1990DS Gooderstone144298
7.3 cm24 Feb 2012DS Gooderstone130132
7.2 cm2 May 2024DS Gooderstone165463
7.1 cm24 Feb 2012DS Gooderstone130132
7.1 cm24 Feb 2012DS Gooderstone130132
6.8 cm11 Oct 2011DS Gooderstone128381
6.6 cm2 May 2024DS Gooderstone165463
6.5 cm24 Feb 2012DS Gooderstone130132
6.5 cm8 Feb 1990DS Gooderstone144298

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 surveyedFirst recordedLast recordedVisits finding bullhead
DS Gooderstone8 Feb 19902 May 20247
Ferry Farm9 Feb 20009 Feb 20001
Cockley Cley9 Feb 20009 Feb 20001

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

1990–2024

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 70 measured fish were spread across different length ranges.

Smallest
3.3 cm
Lower quarter
4.9 cm
Median
5.5 cm
Upper quarter
6.1 cm
Largest
8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Gadder

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

European eel Brown / sea trout Pike

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 →