RiverFish

Bullhead · Cottus gobio

Bullhead in the River Ashop

Largest measured bullhead: 11.4 cm

The largest bullhead measured in Environment Agency surveys of the River Ashop was 11.4 cm, recorded at Lower Ashop Farm on 24 September 2013.

Across 64 measured bullhead, the median measured length was 4.9 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 Ashop.

See bullhead records across England →

Most recent observation16 September 2024Lower Ashop Farm
Largest measured bullhead
11.4 cm
Median length
4.9 cm
Fish measured
64
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.

LengthSurvey dateSurvey locationSurvey ID
11.4 cm24 Sept 2013Lower Ashop Farm139183
11.2 cm24 Sept 2013Lower Ashop Farm139183
10.9 cm24 Sept 2013Lower Ashop Farm139183
10.3 cm24 Sept 2013Lower Ashop Farm139183
10.3 cm20 Jun 2011DS Abstraction Weir126613
8.9 cm20 Jun 2011DS Abstraction Weir126613
8.5 cm20 Jun 2011DS Abstraction Weir126613
8 cm12 Sept 2018Lower Ashop Farm153322
7.9 cm12 Sept 2018Lower Ashop Farm153322
7.8 cm12 Sept 2018Lower Ashop Farm153322

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
Lower Ashop Farm24 Sept 201316 Sept 20243
US Ladybower Reservoir20 Jun 201120 Jun 20111
DS Abstraction Weir20 Jun 201120 Jun 20111
Upper House Farm10 Sept 200910 Sept 20091

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

2009–2024

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 64 measured fish were spread across different length ranges.

Smallest
2.3 cm
Lower quarter
4.4 cm
Median
4.9 cm
Upper quarter
6.3 cm
Largest
11.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ashop

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

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 →