RiverFish

Bullhead · Cottus gobio

Bullhead in the River Hamps

Largest measured bullhead: 10.3 cm

The largest bullhead measured in Environment Agency surveys of the River Hamps was 10.3 cm, recorded at Ford on 3 September 2013.

Across 524 measured bullhead, the median measured length was 5.5 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 Hamps.

See bullhead records across England →

Most recent observation1 October 2025Waterhouses
Largest measured bullhead
10.3 cm
Median length
5.5 cm
Fish measured
524
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
10.3 cm3 Sept 2013Ford139230
10.3 cm8 Apr 2010Onecote Grange121626
10.2 cm3 Sept 2013Ford139230
10.1 cm8 Apr 2010Ford121628
10 cm3 Sept 2013Ford139230
10 cm8 Apr 2010Ford121628
10 cm8 Apr 2010Ford121628
9.8 cm3 Sept 2013Onecote Grange139203
9.8 cm8 Apr 2010Ford121628
9.6 cm2 Oct 2014Waterhouses143293

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
Waterhouses15 Oct 20031 Oct 20254
Ford2 Sept 199719 Sept 20256
Onecote Grange30 Mar 199416 Sept 20257
Green Farm15 Sept 202515 Sept 20251
Paper Mill Farm, Winkhill23 Oct 200330 Mar 20092
Dukeslane Bridge30 Mar 200930 Mar 20091
Stonyslack Farm17 Apr 200317 Apr 20031

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

1994–2025

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 524 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
4.9 cm
Median
5.6 cm
Upper quarter
6.7 cm
Largest
10.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Hamps

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

Brown / sea trout Stone loach Minnow Brook lamprey Grayling

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 →