RiverFish

Bullhead · Cottus gobio

Bullhead in the River Ter (Headwaters)

Largest measured bullhead: 11.9 cm

The largest bullhead measured in Environment Agency surveys of the River Ter (Headwaters) was 11.9 cm, recorded at Ridley Hall on 17 February 1998.

Across 243 measured bullhead, the median measured length was 6.2 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 Ter (Headwaters).

See bullhead records across England →

Most recent observation30 March 2012Great Leighs STW · 1 fish
Largest measured bullhead
11.9 cm
Median length
6.2 cm
Fish measured
243
Survey locations
5

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
11.9 cm17 Feb 1998Ridley Hall13411
10.4 cm17 Feb 1998Ridley Hall13411
10 cm17 Feb 1998Ridley Hall13411
9.8 cm16 Mar 2005Molehill Green84275
9.8 cm11 Feb 1998Great Leighs STW13413
9.5 cm17 Feb 1998Ridley Hall13411
9.5 cm11 Feb 1998Great Leighs STW13413
9.4 cm16 Mar 2005Molehill Green84275
9.1 cm11 Feb 1998Great Leighs STW13413
9.1 cm11 Feb 1998Great Leighs STW13413

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
Great Leighs STW11 Feb 199830 Mar 20123
Molehill Green16 Feb 199829 Mar 20123
Great Leighs Reservoir16 Mar 200516 Mar 20051
Ridley Hall17 Feb 19989 Mar 20052
Lyons Hall (River Ter)16 Feb 19989 Mar 20052

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

1998–2012

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 243 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
5.4 cm
Median
6.2 cm
Upper quarter
7.2 cm
Largest
11.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ter (Headwaters)

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

3-spined stickleback Brown / sea trout Stone loach Minnow European eel Brook lamprey

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 →