RiverFish

Bullhead · Cottus gobio

Bullhead in the River Dean

Largest measured bullhead: 9.8 cm

The largest bullhead measured in Environment Agency surveys of the River Dean was 9.8 cm, recorded at Dede10 on 18 September 2002.

Across 82 measured bullhead, the median measured length was 6.5 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 Dean.

See bullhead records across England →

Most recent observation21 October 2013Dede01
Largest measured bullhead
9.8 cm
Median length
6.5 cm
Fish measured
82
Survey locations
9

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 cm18 Sept 2002Dede1064360
9.5 cm21 Aug 2003Dede0576736
9.5 cm21 Aug 2003Dede0576736
9.5 cm18 Sept 2002Dede1064360
9.2 cm18 Sept 2002Dede1064360
9.1 cm18 Sept 2002Dede1064360
9 cm18 Sept 2002Dede1064360
8.9 cm21 Aug 2003Dede0576736
8.9 cm21 Aug 2003Dede0576736
8.7 cm18 Sept 2002Dede1064360

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
Dede0115 Aug 199621 Oct 20132
Dede2520 Jun 200814 Jun 20132
Dede0521 Aug 200321 Aug 20031
Dede1018 Sept 200218 Sept 20021
De0621 Aug 199621 Aug 19961
De0719 Aug 199619 Aug 19961
De0415 Aug 199615 Aug 19961
De0315 Aug 199615 Aug 19961
De1013 Aug 199613 Aug 19961

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

1996–2013

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 82 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
5.4 cm
Median
6.5 cm
Upper quarter
7.8 cm
Largest
9.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Dean

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

Brown / sea trout Stone loach Minnow Chub Roach Dace

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 →