RiverFish

Bullhead · Cottus gobio

Bullhead in the River Main Bristol Frome

Largest measured bullhead: 9.6 cm

The largest bullhead measured in Environment Agency surveys of the River Main Bristol Frome was 9.6 cm, recorded at Eastville Park (Te) on 13 July 2011.

Across 553 measured bullhead, the median measured length was 5.7 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 Main Bristol Frome.

See bullhead records across England →

Most recent observation4 July 2023Eastville Park (Te)
Largest measured bullhead
9.6 cm
Median length
5.7 cm
Fish measured
553
Survey locations
11

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 cm13 Jul 2011Eastville Park (Te)127116
9.5 cm27 Jul 2021Nibley (Se-03)159998
9.1 cm27 Jul 2021Nibley (Se-03)159998
9.1 cm15 Jul 2014Eastville Park (Te)141707
9 cm26 May 2016Nibley (Se-03)148100
8.9 cm15 Jul 2014Eastville Park (Te)141707
8.8 cm27 Jul 2021Nibley (Se-03)159998
8.7 cm9 Aug 2012St Johns Park132851
8.6 cm27 Jul 2021Nibley (Se-03)159998
8.5 cm26 May 2016Nibley (Se-03)148100

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
Eastville Park (Te)27 Aug 19984 Jul 202313
Goose Green14 Jun 202314 Jun 20231
Damsons Bridge (Te)20 Aug 199826 Jul 20227
Oldbury Court21 Aug 20075 Jul 20223
Nibley (Se-03)19 Aug 199827 Jul 20215
St Johns Park9 Aug 20129 Aug 20121
Meadowmead9 Aug 20129 Aug 20121
Frenchay, Flock Mill (Te)29 May 20033 Aug 20105
Watley's End29 Aug 200729 Aug 20071
Colts Green (Se-03)25 Jun 19987 May 20032
Frenchay, Chapel Lane8 May 20028 May 20021

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

1998–2023

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 553 measured fish were spread across different length ranges.

Smallest
1.8 cm
Lower quarter
5.1 cm
Median
5.7 cm
Upper quarter
6.4 cm
Largest
9.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Bristol Frome

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

Gudgeon Brown / sea trout 3-spined stickleback Roach European eel Minnow

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 →