RiverFish

Bullhead · Cottus gobio

Bullhead in the River Bourne

Largest measured bullhead: 9.2 cm

The largest bullhead measured in Environment Agency surveys of the River Bourne was 9.2 cm, recorded at Upstream Shustoke Reservoir on 6 June 2013.

Across 70 measured bullhead, the median measured length was 6.8 cm.

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

See bullhead records across England →

Most recent observation15 May 2025Upstream Shustoke Reservoir
Largest measured bullhead
9.2 cm
Median length
6.8 cm
Fish measured
70
Survey locations
7

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
9.2 cm6 Jun 2013Upstream Shustoke Reservoir136561
9 cm26 May 2016Upstream Shustoke Reservoir148244
9 cm26 May 2016Upstream Shustoke Reservoir148244
8.8 cm26 May 2016Upstream Shustoke Reservoir148244
8.7 cm6 Jun 2013Upstream Shustoke Reservoir136561
8.5 cm21 Sept 2007Upstream Shustoke Reservoir106934
8.5 cm21 Sept 2007Upstream Shustoke Reservoir106934
8.4 cm26 May 2016Upstream Shustoke Reservoir148244
8.2 cm21 Sept 2007Upstream Shustoke Reservoir106934
8.1 cm6 Jun 2013Upstream Shustoke Reservoir136561

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
Upstream Shustoke Reservoir3 Dec 199815 May 20258
Downstream Of Daw Mill Colliery1 Dec 199815 Sept 20053
Slowley Hall Farm3 Feb 19993 Feb 19991
Fillongley3 Feb 19993 Feb 19991
Furnace End3 Dec 19983 Dec 19981
Dandy's Farm1 Dec 19981 Dec 19981
Upstream Of Daw Mill Colliery24 Nov 199824 Nov 19981

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

1998–2025

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
2.9 cm
Lower quarter
5.4 cm
Median
6.8 cm
Upper quarter
7.6 cm
Largest
9.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Bourne

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

Brown / sea trout Chub Dace Perch Roach 3-spined stickleback

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 →