RiverFish

Bullhead · Cottus gobio

Bullhead in the River Frome

Largest measured bullhead: 10.3 cm

The largest bullhead measured in Environment Agency surveys of the River Frome was 10.3 cm, recorded at Castle Frome on 10 September 2013.

Across 86 measured bullhead, the median measured length was 4.2 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 observation26 August 2025Little Yarkhill
Largest measured bullhead
10.3 cm
Median length
4.2 cm
Fish measured
86
Survey locations
10

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
10.3 cm10 Sept 2013Castle Frome138771
9.2 cm11 Sept 2013Rowden Mill138718
8.2 cm11 Sept 2013Rowden Mill138718
8.1 cm11 Sept 2013Little Yarkhill138973
8 cm11 Sept 2013Yarkhill (Stoke Bridge)138770
8 cm10 Sept 2013Castle Frome138771
7.8 cm11 Sept 2013Rowden Mill138718
7.8 cm11 Sept 2013Rowden Mill138718
6.8 cm11 Sept 2013Rowden Mill138718
6.5 cm26 Aug 2015Yarkhill (Stoke Bridge)146130

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
Little Yarkhill26 Sept 200826 Aug 20253
Castle Frome15 Jul 199212 Jul 20198
Yarkhill (Stoke Bridge)28 Jul 198926 Aug 20157
Rowden Mill11 Sept 201311 Sept 20131
Golden Valley15 Jul 199223 Jul 20086
Longworth Bridge30 Jul 199930 Jul 19991
Five Bridges30 Jul 199930 Jul 19991
Avenbury22 Jul 199730 Jul 19992
Paunton15 Jul 199215 Jul 19921
Canon Frome15 Jul 199215 Jul 19921

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

1989–2025

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 86 measured fish were spread across different length ranges.

Smallest
1.2 cm
Lower quarter
3.4 cm
Median
4.2 cm
Upper quarter
5.5 cm
Largest
10.3 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.

Minnow Stone loach Brown / sea trout European eel Dace 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 →