Bullhead · Cottus gobio

Bullhead in the Diddington Brook

Largest measured bullhead: 7.6 cm

The largest bullhead measured in Environment Agency surveys of the Diddington Brook was 7.6 cm, recorded at Coronation Wood on 20 September 2010.

Across 19 measured bullhead, the median measured length was 5.4 cm.

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

See bullhead records across England →

Most recent observation20 September 2010Margetts Farm · 5 fish

Largest measured bullhead: 7.6 cm
Median length: 5.4 cm
Fish measured: 19
Survey locations: 4

Individual EA measurements

Largest measured bullhead

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
7.6 cm	20 Sept 2010	Coronation Wood	123899
6.4 cm	20 Sept 2010	DS Pumping Station	123904
6.3 cm	20 Sept 2010	US Pumping Station	123902
6.2 cm	20 Sept 2010	DS Pumping Station	123904
6.2 cm	20 Sept 2010	DS Pumping Station	123904
5.9 cm	20 Sept 2010	DS Pumping Station	123904
5.7 cm	20 Sept 2010	DS Pumping Station	123904
5.7 cm	20 Sept 2010	DS Pumping Station	123904
5.4 cm	20 Sept 2010	DS Pumping Station	123904
5.4 cm	20 Sept 2010	US Pumping Station	123902

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 surveyed	First recorded	Last recorded	Visits finding bullhead
US Pumping Station	20 Sept 2010	20 Sept 2010	1
Margetts Farm	20 Sept 2010	20 Sept 2010	1
DS Pumping Station	20 Sept 2010	20 Sept 2010	1
Coronation Wood	20 Sept 2010	20 Sept 2010	1

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

2010–2010

Survey records by year

Each bar shows how many survey visits recorded bullhead that year.

410

Fish measured by surveyors

Measured length distribution

See how the 19 measured fish were spread across different length ranges.

Smallest: 3.1 cm
Lower quarter: 4.6 cm
Median: 5.4 cm
Upper quarter: 6.1 cm
Largest: 7.6 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Diddington Brook

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

Dace Chub European eel Perch Stone loach 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 →