RiverFish

Bullhead · Cottus gobio

Bullhead in the River Wey North

Largest measured bullhead: 8.6 cm

The largest bullhead measured in Environment Agency surveys of the River Wey North was 8.6 cm, recorded at Sheephatch on 23 October 2024.

Across 12 measured bullhead, the median measured length was 7.5 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 Wey North.

See bullhead records across England →

Most recent observation23 October 2024Sheephatch · 12 fish
Largest measured bullhead
8.6 cm
Median length
7.5 cm
Fish measured
12
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
8.6 cm23 Oct 2024Sheephatch168010
8.1 cm23 Oct 2024Sheephatch168010
8 cm23 Oct 2024Sheephatch168010
7.7 cm23 Oct 2024Sheephatch168010
7.6 cm23 Oct 2024Sheephatch168010
7.5 cm23 Oct 2024Sheephatch168010
7.5 cm23 Oct 2024Sheephatch168010
6.8 cm23 Oct 2024Sheephatch168010
6.6 cm23 Oct 2024Sheephatch168010
6.3 cm23 Oct 2024Sheephatch168010

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
Sheephatch17 Nov 200423 Oct 202411
Cox Bridge9 May 200222 Jun 202310
Mill lane, Alton29 Oct 200229 Oct 20146
Snayles Lynch25 Apr 20028 Jun 20065
Downstream Farnham STW1 Oct 20031 Oct 20031
Upstream Froyle Mill3 Sept 20023 Sept 20021

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

2002–2024

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 12 measured fish were spread across different length ranges.

Smallest
5.5 cm
Lower quarter
6.5 cm
Median
7.5 cm
Upper quarter
7.8 cm
Largest
8.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Wey North

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

Brown / sea trout Dace Stone loach Chub Roach Gudgeon

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 →