RiverFish

Bullhead · Cottus gobio

Bullhead in the Hillfarrance Brook

Largest measured bullhead: 9.1 cm

The largest bullhead measured in Environment Agency surveys of the Hillfarrance Brook was 9.1 cm, recorded at Ollery Wood on 30 September 1997.

Across 590 measured bullhead, the median measured length was 5.5 cm.

Surveyors recorded weights for 59 bullhead. The median was 0.1 oz (0.004 kg) and the largest recorded weight was 0.4 oz (0.012 kg).

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

See bullhead records across England →

Most recent observation16 September 2021Ford Bridge, Milverton (Se-03) · 61 fish
Largest measured bullhead
9.1 cm
Median length
5.5 cm
Fish measured
590
Survey locations
9

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
9.1 cm30 Sept 1997Ollery Wood79540
9 cm21 Aug 2018Ford Bridge, Milverton (Se-03)153140
9 cm16 Sept 1997Blagroves79545
8.9 cm30 Sept 1997Brompton Ralph79539
8.8 cm10 May 2017Blagroves150392
8.7 cm30 Sept 1997Ollery Wood79540
8.6 cm30 Sept 1997Ollery Wood79540
8.6 cm30 Sept 1997Brompton Ralph79539
8.5 cm10 May 2017Blagroves150392
8.5 cm16 Oct 1997Town Mill, Milverton79543

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
Ford Bridge, Milverton (Se-03)28 Aug 200116 Sept 20216
Mayfield30 Jun 199710 May 20172
Blagroves16 Sept 199710 May 20172
Town Mill, Milverton16 Oct 199716 Oct 19971
Ollery Wood30 Sept 199730 Sept 19971
Brompton Ralph30 Sept 199730 Sept 19971
Oakhampton Farm18 Sept 199718 Sept 19971
Croford18 Sept 199718 Sept 19971
Milverton STW16 Sept 199716 Sept 19971

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

1997–2021

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 590 measured fish were spread across different length ranges.

Smallest
2.4 cm
Lower quarter
4.7 cm
Median
5.5 cm
Upper quarter
6.3 cm
Largest
9.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 59 bullhead. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.1 oz (0.002 kg)
Median
0.1 oz (0.004 kg)
Upper quarter
0.2 oz (0.006 kg)
Heaviest
0.4 oz (0.012 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Hillfarrance Brook

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

Brown / sea trout European eel Minnow

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 →