RiverFish

Bullhead · Cottus gobio

Bullhead in the River Churn

Largest measured bullhead: 10 cm

The largest bullhead measured in Environment Agency surveys of the River Churn was 10 cm, recorded at North Cerney on 21 September 2007.

Across 29 measured bullhead, the median measured length was 7.5 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 Churn.

See bullhead records across England →

Most recent observation29 April 2025South Cerney - behind outdoor education centre
Largest measured bullhead
10 cm
Median length
7.5 cm
Fish measured
29
Survey locations
12

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
10 cm21 Sept 2007North Cerney106822
9.6 cm21 Sept 2007North Cerney106822
9.4 cm21 Sept 2007North Cerney106822
8.9 cm21 Sept 2007North Cerney106822
8.8 cm21 Sept 2007North Cerney106822
8.7 cm21 Sept 2007North Cerney106822
8.4 cm21 Sept 2007North Cerney106822
8.4 cm21 Sept 2007North Cerney106822
8.3 cm21 Sept 2007North Cerney106822
8.3 cm21 Sept 2007North Cerney106822

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
South Cerney - behind outdoor education centre20 Apr 201729 Apr 20253
North Cerney27 Sept 200629 Apr 20259
River Churn - South Cerney Outdoor Education Centr6 Nov 200116 Apr 20154
River Churn - Cerney Wick9 May 200216 Apr 20155
Siddington29 Jun 200615 Apr 20153
Hammerton (ds N Cerney Site)14 Apr 20111 Apr 20142
River Churn - Colesbourne30 Oct 200127 Sept 20125
River Churn - Perrot's Brook25 Oct 200121 Sept 20103
Marsden Manor - Upstream of Road Bridge20 Mar 200920 Mar 20091
Marsden Manor - Small Channel (by-pass)20 Mar 200920 Mar 20091
Marsden Manor - Main Channel (Below Weir)20 Mar 200920 Mar 20091
River Churn - Upstream Thames Confluence23 Mar 200423 Mar 20041

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

2001–2025

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 29 measured fish were spread across different length ranges.

Smallest
3.6 cm
Lower quarter
6.6 cm
Median
7.5 cm
Upper quarter
8.4 cm
Largest
10 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Churn

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

Brown / sea trout Minnow Pike Roach Perch Chub

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 →