RiverFish

Bullhead · Cottus gobio

Bullhead in the Kennington Stream

Largest measured bullhead: 9.8 cm

The largest bullhead measured in Environment Agency surveys of the Kennington Stream was 9.8 cm, recorded at Ball Lane on 1 May 2025.

Across 190 measured bullhead, the median measured length was 6.6 cm.

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

See bullhead records across England →

Most recent observation15 April 2026Ball Lane · 40 fish
Largest measured bullhead
9.8 cm
Median length
6.6 cm
Fish measured
190
Survey locations
2

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
9.8 cm1 May 2025Ball Lane177044
8.8 cm1 May 2025Ball Lane177044
8.7 cm15 Apr 2026Ball Lane181972
8.6 cm1 May 2025Ball Lane177044
8.6 cm1 May 2025Ball Lane177044
8.5 cm15 Apr 2026Ball Lane181972
8.5 cm1 May 2025Ball Lane177044
8.4 cm15 Apr 2026Ball Lane181972
8.4 cm1 May 2025Ball Lane177044
8.4 cm29 Apr 2025Old Mill Pub177043

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
Ball Lane5 Jun 201415 Apr 20263
Old Mill Pub5 Jun 201429 Apr 20252

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

2014–2026

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 190 measured fish were spread across different length ranges.

Smallest
2.5 cm
Lower quarter
5.8 cm
Median
6.6 cm
Upper quarter
7.5 cm
Largest
9.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

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 →