RiverFish

Bullhead · Cottus gobio

Bullhead in the Louth Canal

Largest measured bullhead: 11.8 cm

The largest bullhead measured in Environment Agency surveys of the Louth Canal was 11.8 cm, recorded at Keddington Corner on 28 May 1986.

Across 94 measured bullhead, the median measured length was 8.2 cm.

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

See bullhead records across England →

Most recent observation25 June 2015Keddington Corner
Largest measured bullhead
11.8 cm
Median length
8.2 cm
Fish measured
94
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
11.8 cm28 May 1986Keddington Corner58015
11 cm26 Apr 1995Brian Halls Mill58041
10.7 cm24 May 1999Brian Halls Mill58055
10.2 cm26 Apr 1995Brian Halls Mill58041
10.2 cm26 Apr 1995Brian Halls Mill58041
10.1 cm24 May 1999Brian Halls Mill58055
10.1 cm23 Jun 1992Brian Halls Mill58028
10.1 cm23 Jun 1992Brian Halls Mill58028
10 cm24 May 1999Brian Halls Mill58055
10 cm24 May 1999Brian Halls Mill58055

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
Keddington Corner28 May 198625 Jun 20153
Alvingham High Bridge15 Jun 199926 Jul 20123
Brian Halls Mill17 Feb 198724 May 19994

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

1986–2015

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 94 measured fish were spread across different length ranges.

Smallest
4.2 cm
Lower quarter
6.8 cm
Median
8.3 cm
Upper quarter
9.4 cm
Largest
11.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Louth Canal

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

Roach European eel 3-spined stickleback Gudgeon Perch Pike

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 →