RiverFish

Bullhead · Cottus gobio

Bullhead in the River Main Carey

Largest measured bullhead: 8 cm

The largest bullhead measured in Environment Agency surveys of the River Main Carey was 8 cm, recorded at Middle Bridge on 14 July 2010.

Across 946 measured bullhead, the median measured length was 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 Main Carey.

See bullhead records across England →

Most recent observation28 July 2025Towerhill Bridge · 11 fish
Largest measured bullhead
8 cm
Median length
5 cm
Fish measured
946
Survey locations
13

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 cm14 Jul 2010Middle Bridge122899
7.7 cm14 Jul 2010Middle Bridge122899
7.5 cm1 Jul 2016Towerhill Bridge148688
7.4 cm14 Jul 2016Dury Ford148694
7.4 cm12 Jul 2016Heale Bridge148693
7.2 cm8 Jul 2015Towerhill Bridge145372
7.2 cm21 Jul 2011Towerhill Bridge127094
7.2 cm14 Jul 2010Middle Bridge122899
7.1 cm1 Jul 2016Towerhill Bridge148688
7.1 cm22 Jul 2013Towerhill Bridge138042

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
Towerhill Bridge13 Jun 198428 Jul 202514
Upstream Middle Bridge12 Jul 201615 Aug 20222
Halwill Bridge18 Jun 19841 Aug 202211
Dury Ford18 Jun 198411 Jul 202210
Heale Bridge12 Jun 198417 Jun 20227
Middle Bridge12 Jun 198414 Jul 201013
Crows Nest11 Oct 199611 Oct 19961
Carey Wood11 Oct 199611 Oct 19961
Carey Barton11 Oct 199611 Oct 19961
Halwill Moor15 Jun 198412 Sept 19963
d/s Middle Bridge25 Jul 199525 Jul 19951
Boldford Bridge12 Jun 19843 Sept 19932
Ashmill13 Jun 198422 Jul 19932

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

1984–2025

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 946 measured fish were spread across different length ranges.

Smallest
1.6 cm
Lower quarter
3 cm
Median
5 cm
Upper quarter
5.6 cm
Largest
8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Carey

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

Brown / sea trout Minnow Atlantic salmon Stone loach European eel 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 →