RiverFish

Bullhead · Cottus gobio

Bullhead in the River Holbeck

Largest measured bullhead: 9.2 cm

The largest bullhead measured in Environment Agency surveys of the River Holbeck was 9.2 cm, recorded at Holbeck, South of East Ness DERBT91 on 1 September 2016.

Across 44 measured bullhead, the median measured length was 5.7 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 Holbeck.

See bullhead records across England →

Most recent observation3 September 2024Holbeck, South of East Ness DERBT91
Largest measured bullhead
9.2 cm
Median length
5.7 cm
Fish measured
44
Survey locations
3

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 cm1 Sept 2016Holbeck, South of East Ness DERBT91149131
9.1 cm27 Aug 2013Holbeck, South of East Ness DERBT91138490
9.1 cm23 Sept 2012Holbeck at Stonegrave133767
8.7 cm27 Aug 2013Holbeck, South of East Ness DERBT91138490
8.6 cm23 Sept 2012Holbeck at Stonegrave133767
8.3 cm23 Sept 2012Holbeck at East Gilling133766
8.1 cm23 Sept 2012Holbeck at East Gilling133766
7.2 cm23 Sept 2012Holbeck at East Gilling133766
7.1 cm23 Sept 2012Holbeck at East Gilling133766
7.1 cm23 Sept 2012Holbeck at East Gilling133766

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
Holbeck, South of East Ness DERBT9112 Sept 19973 Sept 202412
Holbeck at Stonegrave26 Jun 200623 Sept 20122
Holbeck at East Gilling10 Sept 199723 Sept 20123

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

1997–2024

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 44 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
4.2 cm
Median
5.7 cm
Upper quarter
6.9 cm
Largest
9.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Holbeck

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

Brown / sea trout Minnow Grayling Stone loach 3-spined stickleback Dace

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 →