RiverFish

Bullhead · Cottus gobio

Bullhead in the River Rons Cliff Dike

Largest measured bullhead: 9 cm

The largest bullhead measured in Environment Agency surveys of the River Rons Cliff Dike was 9 cm, recorded at Mill Farm on 28 October 2008.

Across 30 measured bullhead, the median measured length was 6.8 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 Rons Cliff Dike.

See bullhead records across England →

Most recent observation28 October 2008Upstream confluence with Ochre Dike · 4 fish
Largest measured bullhead
9 cm
Median length
6.8 cm
Fish measured
30
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 cm28 Oct 2008Mill Farm115639
8.9 cm28 Oct 2008Upstream confluence with Cat Hill Clough115641
8.7 cm28 Oct 2008Upstream confluence with Ochre Dike115642
8.5 cm28 Oct 2008Upstream confluence with Ochre Dike115642
8.5 cm28 Oct 2008Upstream confluence with Cat Hill Clough115641
8.1 cm28 Oct 2008Upstream confluence with Ochre Dike115642
8.1 cm28 Oct 2008Upstream confluence with Cat Hill Clough115641
8 cm28 Oct 2008Upstream confluence with Ochre Dike115642
8 cm28 Oct 2008Mill Farm115639
7.9 cm28 Oct 2008Mill Farm115639

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
Upstream confluence with Ochre Dike28 Oct 200828 Oct 20081
Upstream confluence with Cat Hill Clough28 Oct 200828 Oct 20081
Mill Farm28 Oct 200828 Oct 20081

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

2008–2008

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 30 measured fish were spread across different length ranges.

Smallest
3.6 cm
Lower quarter
5.1 cm
Median
6.8 cm
Upper quarter
8 cm
Largest
9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Rons Cliff Dike

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

3-spined stickleback Brown / sea trout

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 →