RiverFish

Bullhead · Cottus gobio

Bullhead in the Main River Avon Sites

Largest measured bullhead: 8.8 cm

The largest bullhead measured in Environment Agency surveys of the Main River Avon Sites was 8.8 cm, recorded at Avonwick Station (Te) on 4 July 2016.

Across 88 measured bullhead, the median measured length was 6.1 cm.

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

See bullhead records across England →

Most recent observation20 June 2024Avonwick Station (Te) · 7 fish
Largest measured bullhead
8.8 cm
Median length
6.1 cm
Fish measured
88
Survey locations
8

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
8.8 cm4 Jul 2016Avonwick Station (Te)148394
8.5 cm19 Jun 2017Avonwick Station (Te)150675
8.4 cm19 Jun 2017Avonwick Station (Te)150675
8.2 cm4 Jul 2016Avonwick Station (Te)148394
8.2 cm4 Jul 2016Avonwick Station (Te)148394
8 cm1 Jul 2019Avonwick Station (Te)154679
7.9 cm12 Jun 2018Avonwick Station (Te)152715
7.7 cm12 Jun 2018Avonwick Station (Te)152715
7.6 cm12 Jun 2018Avonwick Station (Te)152715
7.6 cm19 Jun 2017Avonwick Station (Te)150675

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
Avonwick Station (Te)12 Aug 199720 Jun 202414
Bickham Bridge (Dip/5 min)20 Aug 19977 Sept 20235
Avonwick Station (5 min)7 Sept 20237 Sept 20231
Downstream South Brent STW (5 min)24 Aug 202324 Aug 20231
Backhill Copse (5min)24 Aug 202324 Aug 20231
Bow Copse (5 min)17 Aug 202317 Aug 20231
Upstream Hatchbridge (Dip)20 Aug 199713 Sept 20226
Upstream Knap Mill (Sp)22 Aug 20119 Aug 20223

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

1997–2024

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 88 measured fish were spread across different length ranges.

Smallest
2.3 cm
Lower quarter
5.3 cm
Median
6.1 cm
Upper quarter
6.8 cm
Largest
8.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main River Avon Sites

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

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

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 →