RiverFish

Bullhead · Cottus gobio

Bullhead in the North Brook

Largest measured bullhead: 12 cm

The largest bullhead measured in Environment Agency surveys of the North Brook was 12 cm, recorded at Downstream Horn Mill on 8 March 1993.

Across 15 measured bullhead, the median measured length was 9 cm.

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

See bullhead records across England →

Most recent observation10 June 2014Downstream Empingham
Largest measured bullhead
12 cm
Median length
9 cm
Fish measured
15
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
12 cm8 Mar 1993Downstream Horn Mill54511
10 cm8 Mar 1993Downstream Horn Mill54511
10 cm8 Mar 1993Downstream Horn Mill54511
10 cm8 Mar 1993Downstream Horn Mill54511
9.5 cm8 Mar 1993Downstream Horn Mill54511
9.5 cm8 Mar 1993Downstream Horn Mill54511
9 cm8 Mar 1993Downstream Horn Mill54511
9 cm8 Mar 1993Downstream Horn Mill54511
8.5 cm8 Mar 1993Downstream Horn Mill54511
8 cm8 Mar 1993Downstream Empingham54512

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
Downstream Empingham8 Mar 199310 Jun 20142
North Brook5 Apr 20055 Apr 20051
Downstream Horn Mill8 Mar 19938 Mar 19931

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

1993–2014

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 15 measured fish were spread across different length ranges.

Smallest
6 cm
Lower quarter
7 cm
Median
9 cm
Upper quarter
9.8 cm
Largest
12 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the North Brook

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

Brown / sea trout European eel Rainbow trout

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 →