RiverFish

Bullhead · Cottus gobio

Bullhead in the River Duston Branch

Largest measured bullhead: 13 cm

The largest bullhead measured in Environment Agency surveys of the River Duston Branch was 13 cm, recorded at Duston Mill on 22 October 1998.

Across 50 measured bullhead, the median measured length was 7.5 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 Duston Branch.

See bullhead records across England →

Most recent observation20 November 2018Whilton STW Downstream
Largest measured bullhead
13 cm
Median length
7.5 cm
Fish measured
50
Survey locations
11

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
13 cm22 Oct 1998Duston Mill54140
12 cm7 Oct 1998Kislingbury54139
12 cm24 Nov 1995Dodford54125
10.5 cm7 Oct 1998Kislingbury54139
10.5 cm10 Sept 1998Dodford54136
10.5 cm10 Sept 1998Brockhall54135
10 cm10 Sept 1998Dodford54136
10 cm10 Sept 1998Brockhall54135
10 cm24 Nov 1995Dodford54125
9.5 cm10 Sept 1998Dodford54136

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
Whilton STW Downstream24 Sept 200820 Nov 20182
Dodford30 Aug 198920 Nov 20187
Nether Heyford5 Sept 19898 Jun 20184
Long Buckby STW Upstream23 Sept 200830 Apr 20153
Everdon23 Sept 200829 Apr 20154
Kislingbury5 Sept 198914 Oct 20096
St James Mill Weir Upstream10 Aug 200910 Aug 20091
St James Mill Weir Downstream10 Aug 200910 Aug 20091
Long Buckby STW Downstream23 Sept 200823 Sept 20081
Brockhall16 Nov 199525 Jul 20013
Duston Mill22 Oct 199822 Oct 19981

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

1989–2018

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 50 measured fish were spread across different length ranges.

Smallest
4 cm
Lower quarter
5.6 cm
Median
7.5 cm
Upper quarter
9 cm
Largest
13 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Duston Branch

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

Brown / sea trout Pike Perch Roach Minnow 3-spined stickleback

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 →