RiverFish

Bullhead · Cottus gobio

Bullhead in the Merriott Brook

Largest measured bullhead: 8.6 cm

The largest bullhead measured in Environment Agency surveys of the Merriott Brook was 8.6 cm, recorded at U/s Merriott STW on 18 April 2012.

Across 443 measured bullhead, the median measured length was 5.1 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Merriott Brook.

See bullhead records across England →

Most recent observation1 May 2018U/s Merriott STW · 75 fish
Largest measured bullhead
8.6 cm
Median length
5.1 cm
Fish measured
443
Survey locations
4

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 cm18 Apr 2012U/s Merriott STW131114
8.2 cm17 Apr 2012Marks Barn131113
8.1 cm18 Apr 2012U/s Merriott STW131114
8.1 cm18 Apr 2012U/s Merriott STW131114
8 cm24 Apr 2018Shutteroaks Bridge152508
8 cm17 Apr 2012Marks Barn131113
7.8 cm1 May 2018U/s Merriott STW152768
7.8 cm24 Apr 2018Shutteroaks Bridge152508
7.8 cm18 Apr 2012U/s Merriott STW131114
7.7 cm18 Apr 2012U/s Merriott STW131114

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
U/s Merriott STW18 Apr 20121 May 20182
Shutteroaks Bridge18 Apr 201224 Apr 20182
Merriott (Se-06)10 May 200618 Apr 20122
Marks Barn17 Apr 201217 Apr 20121

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

2006–2018

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 443 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
4.3 cm
Median
5.1 cm
Upper quarter
6.2 cm
Largest
8.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Merriott Brook

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

3-spined stickleback

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 →