Bullhead · Cottus gobio

Bullhead in the River Wallers Haven

Largest measured bullhead: 8.9 cm

The largest bullhead measured in Environment Agency surveys of the River Wallers Haven was 8.9 cm, recorded at Ash Bourne Stream on 8 September 2004.

Across 3 measured bullhead, the median measured length was 5.9 cm.

Surveyors recorded weights for 3 bullhead. The median was 0.1 oz (0.003 kg) and the largest recorded weight was 0.1 oz (0.004 kg).

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

See bullhead records across England →

Most recent observation17 September 2018Pebsham Bridge · 5 fish

Largest measured bullhead: 8.9 cm
Median length: 5.9 cm
Fish measured: 3
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.

Length	Survey date	Survey location	Survey ID
8.9 cm	8 Sept 2004	Ash Bourne Stream	82205
5.9 cm	8 Sept 2004	Ash Bourne Stream	82205
5.5 cm	8 Sept 2004	Ash Bourne Stream	82205

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
Pebsham Bridge	4 Sept 2012	17 Sept 2018	2
Ash Bourne Stream	8 Sept 2004	18 Apr 2013	2
Downstream Tilley Bridge	29 Jun 2010	29 Jun 2010	1
Nunningham Stream	21 Jan 2000	21 Jan 2000	1
Ashburnham	5 Nov 1999	5 Nov 1999	1

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

1999–2018

Survey records by year

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

199

100

001

002

003

104

005

006

007

008

009

110

011

112

113

014

015

016

017

118

Fish measured by surveyors

Measured length distribution

See how the 3 measured fish were spread across different length ranges.

Smallest: 5.5 cm
Lower quarter: 5.7 cm
Median: 5.9 cm
Upper quarter: 7.4 cm
Largest: 8.9 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 3 bullhead. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.003 kg)
Lower quarter: 0.1 oz (0.003 kg)
Median: 0.1 oz (0.003 kg)
Upper quarter: 0.1 oz (0.0035 kg)
Heaviest: 0.1 oz (0.004 kg)

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

More fish in this river

Explore the River Wallers Haven

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

Perch European eel Roach Pike Common bream Gudgeon

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 →