RiverFish

Bullhead · Cottus gobio

Bullhead in the River Frome

Largest measured bullhead: 11.3 cm

The largest bullhead measured in Environment Agency surveys of the River Frome was 11.3 cm, recorded at Miserden on 16 March 1992.

Across 573 measured bullhead, the median measured length was 6.4 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 Frome.

See bullhead records across England →

Most recent observation3 September 2025Hope Mill Park
Largest measured bullhead
11.3 cm
Median length
6.4 cm
Fish measured
573
Survey locations
23

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
11.3 cm16 Mar 1992Miserden55693
10.7 cm30 Oct 1996Eastington, d/s Stanley Downton55810
10.4 cm19 May 1997Chalford55695
10.2 cm13 Dec 1995Eastington, d/s Stanley Downton55811
10.2 cm11 Mar 1992Upstream Stanley Downton, Eastington55796
10.2 cm28 Nov 1990Eastington55911
10 cm20 May 1997Upstream Stanley Downton, Eastington55795
10 cm30 Oct 1996Eastington, d/s Stanley Downton55810
10 cm30 Oct 1996Eastington, d/s Stanley Downton55810
10 cm16 Mar 1992Miserden55693

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
Hope Mill Park2 Sept 20083 Sept 20258
Ryeford4 Sept 19852 Sept 202522
d/s Sharpness Canal16 Aug 200216 Aug 202414
Churchend, North Arm1 Sept 201018 Aug 20234
Chalford3 Sept 198517 Aug 202311
Edgeworth Mill8 Sept 201116 Aug 20234
Bullbanks8 Sept 201116 Aug 20233
Millend12 Sept 201712 Sept 20171
Upstream Ebley Mill23 Mar 199230 Sept 20089
Snow Business11 Sept 200711 Sept 20071
Capel Mill20 Oct 200620 Oct 20061
Downstream Brimscombe Hill Road Bridge19 Oct 200619 Oct 20061
Brimscombe Port Industrial Estate19 Oct 200619 Oct 20061
Eastington, Church End4 Sept 198531 Aug 20067
D/s Eastington Trading Estate30 Aug 200630 Aug 20061
Eastington, d/s bridge16 Sept 200229 Sept 20054
Thrupp19 Jun 197824 Jul 20026
Upstream Stanley Downton, Eastington4 Sept 198520 May 19973
Eastington, u/s MMB4 Sept 198520 May 19973
Miserden16 Mar 199219 May 19972
Cainscross3 Sept 198519 May 19973
Eastington, d/s Stanley Downton11 Oct 199430 Oct 19963
Eastington11 Oct 19895 Nov 19913

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

1978–2025

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 573 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
5.3 cm
Median
6.4 cm
Upper quarter
7.5 cm
Largest
11.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Frome

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

Brown / sea trout European eel 3-spined stickleback Roach Pike Common bream

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 →