Bullhead · Cottus gobio

Bullhead in the Claydon Brook

Largest measured bullhead: 11.3 cm

The largest bullhead measured in Environment Agency surveys of the Claydon Brook was 11.3 cm, recorded at Brook Farm on 25 May 1988.

Across 81 measured bullhead, the median measured length was 6.3 cm.

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

See bullhead records across England →

Most recent observation2 August 2016Brook Farm · 2 fish

Largest measured bullhead: 11.3 cm
Median length: 6.3 cm
Fish measured: 81
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
11.3 cm	25 May 1988	Brook Farm	28956
11 cm	27 Mar 2006	DS White Bridge	90417
10.6 cm	2 Aug 2016	Brook Farm	148728
10.5 cm	27 Mar 2006	DS White Bridge	90417
9.3 cm	15 Feb 2011	Brook Farm	125925
9.3 cm	8 Mar 1994	White Bridge	28978
8.9 cm	15 Feb 2011	Brook Farm	125925
8.8 cm	10 Mar 1994	Brook Farm	28975
8.6 cm	15 Feb 2011	Brook Farm	125925
8.4 cm	15 Feb 2011	Brook Farm	125925

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
Brook Farm	25 May 1988	2 Aug 2016	5
Hill Farm	10 Mar 1994	1 Jul 2010	3
West Hill Farm	5 Feb 1991	25 May 2010	2
DS White Bridge	27 Mar 2006	27 Mar 2006	1
White Bridge	4 Feb 1991	8 Mar 1994	2

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

1988–2016

Survey records by year

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

188

089

090

291

092

093

394

095

096

097

298

099

000

001

002

003

004

005

106

007

008

009

210

111

012

013

014

015

116

Fish measured by surveyors

Measured length distribution

See how the 81 measured fish were spread across different length ranges.

Smallest: 2 cm
Lower quarter: 5.5 cm
Median: 6.3 cm
Upper quarter: 7.4 cm
Largest: 11.3 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Claydon Brook

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

Chub Pike Roach Dace Gudgeon Stone loach

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 →