RiverFish

Bullhead · Cottus gobio

Bullhead in the River Can (Main Reaches)

Largest measured bullhead: 9.2 cm

The largest bullhead measured in Environment Agency surveys of the River Can (Main Reaches) was 9.2 cm, recorded at Warren Bridge on 23 November 2007.

Across 56 measured bullhead, the median measured length was 6 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 Can (Main Reaches).

See bullhead records across England →

Most recent observation17 October 2025Admirals Park · 13 fish
Largest measured bullhead
9.2 cm
Median length
6 cm
Fish measured
56
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
9.2 cm23 Nov 2007Warren Bridge108710
7.8 cm23 Nov 2007Warren Bridge108710
7.6 cm22 Oct 2019Admirals Park156045
7.5 cm21 Nov 2001Warren Bridge22064
7.5 cm21 Nov 2001Warren Bridge22064
7.5 cm23 Nov 1989Warren Bridge14507
7.3 cm22 Oct 2019Admirals Park156045
7.3 cm14 Oct 2013Warren Bridge140192
7.3 cm14 Oct 2013Warren Bridge140192
7.3 cm23 Nov 2007Warren Bridge108710

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
Admirals Park18 Oct 201317 Oct 20253
Warren Bridge23 Nov 198914 Oct 20135
Central Park1 Oct 20131 Oct 20131

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

1989–2025

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 56 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
5 cm
Median
6 cm
Upper quarter
7 cm
Largest
9.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Can (Main Reaches)

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

Roach Dace Gudgeon Chub Pike Perch

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 →