RiverFish

Bullhead · Cottus gobio

Bullhead in the River Main Deer

Largest measured bullhead: 9.4 cm

The largest bullhead measured in Environment Agency surveys of the River Main Deer was 9.4 cm, recorded at Forda Mill on 27 May 2022.

Across 471 measured bullhead, the median measured length was 5.3 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 Main Deer.

See bullhead records across England →

Most recent observation10 June 2022Deer Bridge · 96 fish
Largest measured bullhead
9.4 cm
Median length
5.3 cm
Fish measured
471
Survey locations
12

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
9.4 cm27 May 2022Forda Mill161951
8.9 cm10 Jun 2022Deer Bridge161955
8.9 cm27 May 2022Forda Mill161951
8.9 cm8 Jun 2016Deer Bridge148205
8.6 cm27 May 2022Forda Mill161951
8.6 cm18 May 2016Forda Mill148063
8.6 cm18 May 2016Forda Mill148063
8.5 cm10 Jun 2022Deer Bridge161955
8.5 cm26 Apr 2018Upstream Impact154538
8.5 cm8 Jun 2016Deer Bridge148205

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
Deer Bridge22 Jun 198410 Jun 20228
Honeycroft Bridge7 Jun 198427 May 20229
Forda Mill20 Jun 198427 May 20228
Derriton Bridge21 Jun 198425 May 20228
Winscott (Above Rd Br)26 Apr 201826 Apr 20181
Upstream Impact26 Apr 201826 Apr 20181
Upstream Deer Br26 Apr 201826 Apr 20181
Babington Bridge7 Jun 198424 Sept 19963
Winscott Bridge11 Jun 198423 Sept 19964
Gulliver Bridge19 Jun 198423 Sept 19964
Pot Factory Spawning Beds24 May 199524 May 19951
Forda Art Spawning Bed22 May 199522 May 19951

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

1984–2022

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 471 measured fish were spread across different length ranges.

Smallest
1.6 cm
Lower quarter
4.7 cm
Median
5.3 cm
Upper quarter
6.1 cm
Largest
9.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Deer

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

Brown / sea trout Minnow Stone loach European eel Atlantic salmon Brook lamprey

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 →