RiverFish

Bullhead · Cottus gobio

Bullhead in the Cavenham Stream

Largest measured bullhead: 10.7 cm

The largest bullhead measured in Environment Agency surveys of the Cavenham Stream was 10.7 cm, recorded at Lark Confluence on 18 April 2011.

Across 49 measured bullhead, the median measured length was 7.3 cm.

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

See bullhead records across England →

Most recent observation19 July 2016DS Cavenham Mill · 1 fish
Largest measured bullhead
10.7 cm
Median length
7.3 cm
Fish measured
49
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
10.7 cm18 Apr 2011Lark Confluence126107
10.3 cm22 Feb 2000Cavenham Mill30099
10.2 cm23 Mar 2012DS Cavenham Mill130231
10.1 cm23 Mar 2012DS Cavenham Mill130231
9.5 cm23 Mar 2012DS Cavenham Mill130231
9.4 cm18 Apr 2011Lark Confluence126107
9.3 cm27 Mar 1995Cavenham Mill30120
8.8 cm22 Feb 2000Cavenham Mill30099
8.8 cm22 Feb 2000Cavenham Mill30099
8.8 cm27 Mar 1995Cavenham Mill30120

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
DS Cavenham Mill18 Apr 201119 Jul 20163
Lark Confluence18 Apr 201118 Apr 20111
Cavenham Mill27 Mar 199511 Apr 20073

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

1995–2016

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 49 measured fish were spread across different length ranges.

Smallest
4.8 cm
Lower quarter
6.3 cm
Median
7.3 cm
Upper quarter
8.3 cm
Largest
10.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Cavenham Stream

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

Brown / sea trout Gudgeon Stone loach 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 →