RiverFish

Bullhead · Cottus gobio

Bullhead in the River Dun

Largest measured bullhead: 9 cm

The largest bullhead measured in Environment Agency surveys of the River Dun was 9 cm, recorded at Kimbridge Farmhouse on 15 September 2025.

Across 320 measured bullhead, the median measured length was 5.5 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 Dun.

See bullhead records across England →

Most recent observation15 September 2025Kimbridge Farmhouse · 27 fish
Largest measured bullhead
9 cm
Median length
5.5 cm
Fish measured
320
Survey locations
6

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 cm15 Sept 2025Kimbridge Farmhouse178938
8.9 cm1 Jul 2025Dunbridge Station179255
8.6 cm1 Jul 2025Dunbridge Station179255
8.5 cm1 Jul 2025Dunbridge Station179255
8.4 cm15 Sept 2025Kimbridge Farmhouse178938
8.4 cm15 Sept 2025Kimbridge Farmhouse178938
8.1 cm1 Jul 2025Dunbridge Station179255
8 cm15 Sept 2025Kimbridge Farmhouse178938
8 cm15 Sept 2025Kimbridge Farmhouse178938
8 cm1 Jul 2025Dunbridge Station179255

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
Kimbridge Farmhouse15 Sept 202515 Sept 20251
Old Vicarage28 Sept 20127 Aug 20254
Park Farm10 Apr 20122 Jul 20254
Dunbridge Station31 Jul 20121 Jul 20254
Blue Pool4 Apr 20124 Apr 20121
Sawmill9 Jul 20049 Jul 20041

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

2004–2025

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 320 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
4.3 cm
Median
5.5 cm
Upper quarter
6.3 cm
Largest
9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Dun

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

Brown / sea trout European eel

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 →