RiverFish

Bullhead · Cottus gobio

Bullhead in the Sherdon Water

Largest measured bullhead: 8.5 cm

The largest bullhead measured in Environment Agency surveys of the Sherdon Water was 8.5 cm, recorded at Fernyball (Te) on 31 July 2018.

Across 100 measured bullhead, the median measured length was 3.1 cm.

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

See bullhead records across England →

Most recent observation29 July 2024Fernyball (Te) · 228 fish
Largest measured bullhead
8.5 cm
Median length
3.1 cm
Fish measured
100
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
8.5 cm31 Jul 2018Fernyball (Te)153007
8 cm19 Jul 2016Fernyball (Te)148578
8 cm19 Jul 2016Fernyball (Te)148578
7.8 cm19 Jul 2016Fernyball (Te)148578
7.7 cm19 Jul 2016Fernyball (Te)148578
7.4 cm19 Jul 2016Fernyball (Te)148578
7.2 cm19 Jul 2016Fernyball (Te)148578
7.1 cm31 Jul 2018Fernyball (Te)153007
7 cm31 Jul 2018Fernyball (Te)153007
7 cm19 Jul 2016Fernyball (Te)148578

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
Fernyball (Te)22 Jun 199529 Jul 202418
Sherdon Bridge (Sp)16 Jun 199829 Jun 20225

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

1995–2024

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 100 measured fish were spread across different length ranges.

Smallest
2.2 cm
Lower quarter
2.7 cm
Median
3.2 cm
Upper quarter
6 cm
Largest
8.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Sherdon Water

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

Atlantic salmon Brown / sea trout Stone loach Minnow

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 →