RiverFish

Bullhead · Cottus gobio

Bullhead in the Cock Beck

Largest measured bullhead: 9.5 cm

The largest bullhead measured in Environment Agency surveys of the Cock Beck was 9.5 cm, recorded at Leyfield Farm (u/s Aberford) on 30 August 2017.

Across 66 measured bullhead, the median measured length was 5.2 cm.

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

See bullhead records across England →

Most recent observation30 August 2017Low Lead Farm · 17 fish
Largest measured bullhead
9.5 cm
Median length
5.2 cm
Fish measured
66
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
9.5 cm30 Aug 2017Leyfield Farm (u/s Aberford)151584
9.1 cm17 Aug 2011Downstream Crooked Billet129148
8.4 cm22 Aug 2014Downstream Crooked Billet142936
8.3 cm22 Aug 2014Downstream Stutton Road Bridge142937
8.1 cm30 Aug 2017Low Lead Farm151599
7.8 cm30 Aug 2017Low Lead Farm151599
7.7 cm17 Aug 2011Downstream Crooked Billet129148
7.6 cm30 Aug 2017Low Lead Farm151599
7.6 cm22 Aug 2014Downstream Crooked Billet142936
7.2 cm30 Aug 2017Low Lead Farm151599

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
Low Lead Farm30 Aug 201730 Aug 20171
Leyfield Farm (u/s Aberford)30 Aug 201730 Aug 20171
Downstream Stutton Road Bridge13 Jul 200430 Aug 20173
Downstream Crooked Billet13 Jul 200422 Aug 20144
Upstream Stutton Road Bridge13 Jul 200413 Jul 20041
Cock Beck Downstream A6413 Jul 200413 Jul 20041

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

2004–2017

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 66 measured fish were spread across different length ranges.

Smallest
2.4 cm
Lower quarter
3.3 cm
Median
5.2 cm
Upper quarter
6.4 cm
Largest
9.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Cock Beck

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

European eel Brown / sea trout Minnow Chub Dace 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 →