RiverFish

Bullhead · Cottus gobio

Bullhead in the Connon Stream

Largest measured bullhead: 6.7 cm

The largest bullhead measured in Environment Agency surveys of the Connon Stream was 6.7 cm, recorded at u/s Connon Bridge on 11 August 2014.

Across 42 measured bullhead, the median measured length was 5.3 cm.

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

See bullhead records across England →

Most recent observation11 August 2014u/s Connon Bridge · 17 fish
Largest measured bullhead
6.7 cm
Median length
5.3 cm
Fish measured
42
Survey locations
3

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
6.7 cm11 Aug 2014u/s Connon Bridge142169
6.5 cm11 Aug 2014u/s Connon Bridge142169
6.5 cm11 Aug 2014u/s Connon Bridge142169
6.4 cm16 Jul 2014Tresarran141721
6.3 cm11 Aug 2014u/s Connon Bridge142169
6.3 cm11 Aug 2014u/s Connon Bridge142169
6.2 cm16 Jul 2014Tresarran141721
6.1 cm11 Aug 2014u/s Connon Bridge142169
6.1 cm16 Jul 2014Tresarran141721
5.9 cm16 Jul 2014Tresarran141721

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 Connon Bridge9 Sept 199411 Aug 20144
Tresarran26 Aug 199416 Jul 20145
Trevillis Wood14 Jul 200814 Jul 20081

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

1994–2014

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 42 measured fish were spread across different length ranges.

Smallest
2.4 cm
Lower quarter
4.9 cm
Median
5.4 cm
Upper quarter
5.8 cm
Largest
6.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Connon Stream

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

Brown / sea trout Atlantic salmon European eel

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 →