RiverFish

Bullhead · Cottus gobio

Bullhead in the Great Eau Tributary Sites

Largest measured bullhead: 9.8 cm

The largest bullhead measured in Environment Agency surveys of the Great Eau Tributary Sites was 9.8 cm, recorded at Swaby on 9 January 1995.

Across 17 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 Great Eau Tributary Sites.

See bullhead records across England →

Most recent observation16 November 2012Calceby · 2 fish
Largest measured bullhead
9.8 cm
Median length
5.8 cm
Fish measured
17
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
9.8 cm9 Jan 1995Swaby69925
9.7 cm9 Jan 1995Calceby69927
9.2 cm9 Jan 1995Swaby69925
8.6 cm16 Nov 2012Calceby135248
8.4 cm9 Jan 1995Swaby69925
8.2 cm9 Jan 1995Swaby69925
7.6 cm16 Nov 2012Calceby135248
7.1 cm9 Jan 1995Swaby69925
5.8 cm9 Jan 1995Swaby69925
5.2 cm9 Jan 1995Swaby69925

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
Calceby9 Jan 199516 Nov 20122
Swaby9 Jan 19959 Jan 19951
Ketsby Mill Farm9 Jan 19959 Jan 19951

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

1995–2012

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 17 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
4 cm
Median
5.8 cm
Upper quarter
8.4 cm
Largest
9.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Great Eau Tributary Sites

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

Brown / sea trout

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 →