RiverFish

Bullhead · Cottus gobio

Bullhead in the Kellacott Stream

Largest measured bullhead: 9.3 cm

The largest bullhead measured in Environment Agency surveys of the Kellacott Stream was 9.3 cm, recorded at Upcott Mill on 14 August 2023.

Across 240 measured bullhead, the median measured length was 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 Kellacott Stream.

See bullhead records across England →

Most recent observation11 September 2025Drownsmill · 16 fish
Largest measured bullhead
9.3 cm
Median length
5 cm
Fish measured
240
Survey locations
2

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
9.3 cm14 Aug 2023Upcott Mill163135
8.9 cm2 Sept 2021Upcott Mill160598
8.7 cm18 Jul 2018Upcott Mill153078
8.7 cm11 Aug 2016Upcott Mill148917
8.4 cm11 Aug 2016Upcott Mill148917
8.3 cm18 Jul 2018Upcott Mill153078
8.3 cm11 Aug 2016Upcott Mill148917
8.2 cm18 Jul 2018Upcott Mill153078
8.1 cm18 Aug 2015Upcott Mill146036
8 cm19 Aug 2025Upcott Mill178932

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
Drownsmill11 Aug 199211 Sept 202510
Upcott Mill17 Jul 199219 Aug 202522

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

1992–2025

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 240 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
3.7 cm
Median
5.1 cm
Upper quarter
6.2 cm
Largest
9.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Kellacott Stream

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

Brown / sea trout Stone loach Atlantic salmon Minnow European eel Brook lamprey

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 →