RiverFish

Bullhead · Cottus gobio

Bullhead in the River Piall

Largest measured bullhead: 8.2 cm

The largest bullhead measured in Environment Agency surveys of the River Piall was 8.2 cm, recorded at u/s Marks Bridge on 13 July 2016.

Across 121 measured bullhead, the median measured length was 5.7 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 Piall.

See bullhead records across England →

Most recent observation31 July 2025u/s Marks Bridge · 1 fish
Largest measured bullhead
8.2 cm
Median length
5.7 cm
Fish measured
121
Survey locations
7

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
8.2 cm13 Jul 2016u/s Marks Bridge148691
8.1 cm13 Jul 2016u/s Marks Bridge148691
7.8 cm15 Jul 2014u/s Marks Bridge141722
7.7 cm13 Jul 2016u/s Marks Bridge148691
7.6 cm22 Aug 2012u/s Marks Bridge132966
7.5 cm26 Jul 2018u/s Marks Bridge152984
7.5 cm13 Jul 2016u/s Marks Bridge148691
7.5 cm15 Jul 2014u/s Marks Bridge141722
7.4 cm26 Jul 2018u/s Marks Bridge152984
7.4 cm13 Jul 2016u/s Marks Bridge148691

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
u/s Marks Bridge8 Aug 200231 Jul 202514
Lutton8 Aug 200231 Jul 20255
Higher Sladebridge5 Oct 202314 Aug 20242
Marks Bridge5 Oct 20235 Oct 20231
Slade 231 Jul 200631 Jul 20061
Slade 131 Jul 200631 Jul 20061
Sladesbridge6 Aug 20046 Aug 20041

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

2002–2025

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 121 measured fish were spread across different length ranges.

Smallest
2.1 cm
Lower quarter
4.1 cm
Median
5.7 cm
Upper quarter
6.7 cm
Largest
8.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Piall

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

Brown / sea trout European eel Atlantic salmon 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 →