RiverFish

Bullhead · Cottus gobio

Bullhead in the River Beane

Largest measured bullhead: 8.1 cm

The largest bullhead measured in Environment Agency surveys of the River Beane was 8.1 cm, recorded at Hertford North on 18 August 2011.

Across 2 measured bullhead, the median measured length was 8 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 Beane.

See bullhead records across England →

Most recent observation13 April 2026Mill Lane, Watton At Stone
Largest measured bullhead
8.1 cm
Median length
8 cm
Fish measured
2
Survey locations
11

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
8.1 cm18 Aug 2011Hertford North127477
7.8 cm29 Oct 2003Hertford North78247

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
Mill Lane, Watton At Stone13 May 200813 Apr 20264
Church Lane, Stapleford21 Apr 200813 Apr 20265
Woodhall Phase 313 Oct 202513 Oct 20251
Hartham Common Beane2 Nov 199314 Jun 20246
Waterford14 Aug 201418 Oct 20212
Woodhall Estate Bypass21 Jul 202121 Jul 20211
Downstream Cedar Close4 Oct 20184 Oct 20181
Waterford Marsh14 Aug 201714 Aug 20171
US Waterford14 Aug 201714 Aug 20171
Hertford North29 Oct 200318 Aug 20112
Goldings28 Oct 199328 Oct 19931

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

1993–2026

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 2 measured fish were spread across different length ranges.

Smallest
7.8 cm
Lower quarter
7.9 cm
Median
8 cm
Upper quarter
8 cm
Largest
8.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Beane

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

Perch Pike Minnow 3-spined stickleback Roach 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 →