Bullhead · Cottus gobio

Bullhead in the Bourne Rivulet

Largest measured bullhead: 10.4 cm

The largest bullhead measured in Environment Agency surveys of the Bourne Rivulet was 10.4 cm, recorded at Vitacress Western Fork on 23 November 2006.

Across 438 measured bullhead, the median measured length was 5.6 cm.

Surveyors recorded weights for 237 bullhead. The median was 0.1 oz (0.003 kg) and the largest recorded weight was 1 oz (0.028 kg).

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

See bullhead records across England →

Most recent observation26 September 2013The Island · 325 fish

Largest measured bullhead: 10.4 cm
Median length: 5.6 cm
Fish measured: 438
Survey locations: 7

Individual EA measurements

Largest measured bullhead

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
10.4 cm	23 Nov 2006	Vitacress Western Fork	105696
9.7 cm	18 Apr 2006	Vitacress Eastern Fork effluent channel	90671
9.7 cm	18 Apr 2006	Vitacress Eastern Fork effluent channel	90671
9.5 cm	20 Apr 2006	Hurstbourne	90668
9.4 cm	23 Nov 2006	Vitacress Western Fork	105696
9.4 cm	23 Nov 2006	Vitacress Western Fork	105696
9.4 cm	23 Nov 2006	The Island	105085
9.4 cm	24 Jun 2004	Hurstbourne	80228
9.3 cm	23 Nov 2006	Vitacress Western Fork	105696
9.3 cm	23 Nov 2006	The Island	105085

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 surveyed	First recorded	Last recorded	Visits finding bullhead
The Island	30 Nov 2004	26 Sept 2013	4
Hurstbourne	24 Jun 2004	2 May 2013	4
Vitacress Western Fork	24 Jun 2004	23 Nov 2006	4
Vitacress Eastern Fork effluent channel	29 Nov 2004	23 Nov 2006	3
DS The Parallel	24 Jul 2004	23 Nov 2006	3
100m d/s Ironbridge	20 Apr 2006	22 Nov 2006	2
Iron Bridge	24 Jun 2004	30 Nov 2004	2

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

2004–2013

Survey records by year

Each bar shows how many survey visits recorded bullhead that year.

804

005

1206

007

008

009

010

011

012

213

Fish measured by surveyors

Measured length distribution

See how the 438 measured fish were spread across different length ranges.

Smallest: 2.6 cm
Lower quarter: 5 cm
Median: 5.6 cm
Upper quarter: 6.5 cm
Largest: 10.4 cm

0–99 mm

437

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 237 bullhead. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.1 oz (0.002 kg)
Median: 0.1 oz (0.003 kg)
Upper quarter: 0.2 oz (0.005 kg)
Heaviest: 1 oz (0.028 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Bourne Rivulet

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

Brown / sea trout European eel 3-spined stickleback Brook lamprey

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 →