RiverFish

Bullhead · Cottus gobio

Bullhead in the Went at Ackworth School (project)

Largest measured bullhead: 8.4 cm

The largest bullhead measured in Environment Agency surveys of the Went at Ackworth School (project) was 8.4 cm, recorded at Site 2 (d/s log jam) on 22 September 2016.

Across 15 measured bullhead, the median measured length was 6.1 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Went at Ackworth School (project).

See bullhead records across England →

Most recent observation22 August 2017Site 5 (u/s pumping station) · 1 fish
Largest measured bullhead
8.4 cm
Median length
6.1 cm
Fish measured
15
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
8.4 cm22 Sept 2016Site 2 (d/s log jam)149759
8.1 cm22 Sept 2016Site 1 (d/s footbridge)149758
8 cm22 Sept 2016Site 1 (d/s footbridge)149758
7 cm22 Sept 2016Site 1 (d/s footbridge)149758
6.5 cm22 Sept 2016Site 2 (d/s log jam)149759
6.5 cm22 Sept 2016Site 1 (d/s footbridge)149758
6.3 cm22 Sept 2016Site 2 (d/s log jam)149759
6.1 cm22 Sept 2016Site 2 (d/s log jam)149759
6 cm22 Sept 2016Site 1 (d/s footbridge)149758
6 cm22 Sept 2016Site 1 (d/s footbridge)149758

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
Site 5 (u/s pumping station)22 Sept 201622 Aug 20172
Site 2 (d/s log jam)22 Sept 201622 Aug 20172
Site 6 (d/s pipe)22 Sept 201622 Sept 20161
Site 4 (d/s pumping station)22 Sept 201622 Sept 20161
Site 3 (u/s log jam)22 Sept 201622 Sept 20161
Site 1 (d/s footbridge)22 Sept 201622 Sept 20161

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

2016–2017

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 15 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
5.6 cm
Median
6.1 cm
Upper quarter
6.8 cm
Largest
8.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Went at Ackworth School (project)

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

Stone loach

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 →