RiverFish

Bullhead · Cottus gobio

Bullhead in the Main River Parrett

Largest measured bullhead: 9.6 cm

The largest bullhead measured in Environment Agency surveys of the Main River Parrett was 9.6 cm, recorded at Bow Barn Farm on 15 August 2019.

Across 1,797 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 Main River Parrett.

See bullhead records across England →

Most recent observation2 September 2025Yeo Valley Creamery
Largest measured bullhead
9.6 cm
Median length
5 cm
Fish measured
1,797
Survey locations
5

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
9.6 cm15 Aug 2019Bow Barn Farm155136
9.3 cm11 Aug 2015Yeo Valley Creamery145821
9.3 cm14 Aug 2013Bow Barn Farm137877
9.1 cm15 Aug 2013Yeo Valley Creamery137907
9 cm15 Aug 2013Yeo Valley Creamery137907
8.8 cm14 Aug 2013Bow Barn Farm137877
8.8 cm14 Aug 2013Bow Barn Farm137877
8.6 cm15 Aug 2013Yeo Valley Creamery137907
8.6 cm14 Aug 2013Bow Barn Farm137877
8.5 cm11 Aug 2015Yeo Valley Creamery145821

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
Yeo Valley Creamery28 Jul 20092 Sept 20259
Gawbridge17 Sept 200924 Jul 20257
Haselbury Mill10 Jul 20098 Jul 20259
Downstream Lecher Water20 Jul 20098 Jul 20258
Bow Barn Farm30 Sept 20093 Jul 20259

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

2009–2025

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 1,797 measured fish were spread across different length ranges.

Smallest
1.6 cm
Lower quarter
3.6 cm
Median
5 cm
Upper quarter
6.1 cm
Largest
9.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main River Parrett

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

European eel Roach Perch Ruffe Gudgeon 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 →