RiverFish

Bullhead · Cottus gobio

Bullhead in the River Misbourne

Largest measured bullhead: 9.8 cm

The largest bullhead measured in Environment Agency surveys of the River Misbourne was 9.8 cm, recorded at Downstream of Shardeloes Lake on 13 May 2011.

Across 7 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 River Misbourne.

See bullhead records across England →

Most recent observation2 June 2026Kennel Farm
Largest measured bullhead
9.8 cm
Median length
7.3 cm
Fish measured
7
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
9.8 cm13 May 2011Downstream of Shardeloes Lake126425
7.5 cm13 May 2011Downstream of Shardeloes Lake126425
7.5 cm13 May 2011Downstream of Shardeloes Lake126425
7.3 cm13 May 2011Downstream of Shardeloes Lake126425
7.2 cm13 May 2011Downstream of Shardeloes Lake126425
7 cm13 May 2011Downstream of Shardeloes Lake126425
6.5 cm13 May 2011Downstream of Shardeloes Lake126425

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
Kennel Farm2 Jun 20262 Jun 20261
Denham Country Park upstream7 Jun 201912 May 20262
Downstream of Shardeloes Lake13 May 20115 May 20263
Isle of Wight Farm28 Apr 200824 May 20193
Denham Country Park9 May 20119 May 20111

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

2008–2026

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 7 measured fish were spread across different length ranges.

Smallest
6.5 cm
Lower quarter
7.1 cm
Median
7.3 cm
Upper quarter
7.5 cm
Largest
9.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Misbourne

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

3-spined stickleback Brown / sea 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 →