Bullhead · Cottus gobio

Bullhead in the Sydling Water

Largest measured bullhead: 8.2 cm

The largest bullhead measured in Environment Agency surveys of the Sydling Water was 8.2 cm, recorded at Upstream of Grimstone on 6 October 2015.

Across 14 measured bullhead, the median measured length was 5.2 cm.

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

See bullhead records across England →

Most recent observation8 September 2017Sydling Water New Channel

Largest measured bullhead: 8.2 cm
Median length: 5.2 cm
Fish measured: 14
Survey locations: 4

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
8.2 cm	6 Oct 2015	Upstream of Grimstone	146885
7.4 cm	21 Sept 2011	Upstream of Grimstone	128172
6.2 cm	21 Sept 2011	Upstream of Grimstone	128172
5.9 cm	21 Sept 2011	Upstream of Grimstone	128172
5.8 cm	21 Sept 2011	Upstream of Grimstone	128172
5.4 cm	21 Sept 2011	Upstream of Grimstone	128172
5.2 cm	21 Sept 2011	Upstream of Grimstone	128172
5.2 cm	21 Sept 2011	Upstream of Grimstone	128172
5 cm	21 Sept 2011	Upstream of Grimstone	128172
4.4 cm	21 Sept 2011	Upstream of Grimstone	128172

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
Sydling Water New Channel	8 Sept 2017	8 Sept 2017	1
Upstream of Grimstone	18 Sept 2009	6 Oct 2015	3
Sydling u/s Sluice	27 Aug 2013	27 Aug 2013	1
Grimstone d/s of weir	27 Aug 2013	27 Aug 2013	1

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

2009–2017

Survey records by year

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

109

010

111

012

213

014

115

016

117

Fish measured by surveyors

Measured length distribution

See how the 14 measured fish were spread across different length ranges.

Smallest: 3.6 cm
Lower quarter: 4.3 cm
Median: 5.2 cm
Upper quarter: 5.9 cm
Largest: 8.2 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Sydling Water

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

Brown / sea trout Stone loach European eel Atlantic salmon

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 →