RiverFish

Bullhead · Cottus gobio

Bullhead in the River Greet

Largest measured bullhead: 11.5 cm

The largest bullhead measured in Environment Agency surveys of the River Greet was 11.5 cm, recorded at Maythorne Mill on 2 June 2011.

Across 60 measured bullhead, the median measured length was 6.7 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 Greet.

See bullhead records across England →

Most recent observation8 July 2025Kirklington
Largest measured bullhead
11.5 cm
Median length
6.7 cm
Fish measured
60
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
11.5 cm2 Jun 2011Maythorne Mill126395
10.2 cm11 May 2016Rolleston148010
9.1 cm2 Jun 2011Maythorne Mill126395
9 cm2 Jun 2011Maythorne Mill126395
8.9 cm2 Jun 2011Maythorne Mill126395
8.7 cm11 May 2016Rolleston148010
8.4 cm2 Jun 2011Maythorne Mill126395
8.3 cm11 May 2016Rolleston148010
8.2 cm2 Jun 2011Maythorne Mill126395
8.1 cm11 May 2016Fiskerton Mill148005

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
Kirklington29 Jul 20148 Jul 20252
Southwell23 Feb 19997 Jul 20253
Rolleston11 May 201611 May 20161
Fiskerton Mill11 May 201611 May 20161
Southwell Gauging Station29 Jul 201429 Jul 20141
Maythorne Mill24 Feb 19992 Jun 20113
Upton16 Jul 200216 Jul 20021

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

1999–2025

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 60 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
5.9 cm
Median
6.7 cm
Upper quarter
7.7 cm
Largest
11.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Greet

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

Brown / sea trout Stone loach Roach 3-spined stickleback Perch

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 →