Bullhead · Cottus gobio

Bullhead in the Willow Brook

Largest measured bullhead: 11 cm

The largest bullhead measured in Environment Agency surveys of the Willow Brook was 11 cm, recorded at Woodnewton on 8 September 1998.

Across 23 measured bullhead, the median measured length was 7 cm.

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

See bullhead records across England →

Most recent observation25 October 2018Walcot Lodge DS Site

Largest measured bullhead: 11 cm
Median length: 7 cm
Fish measured: 23
Survey locations: 9

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 cm	8 Sept 1998	Woodnewton	54471
10.5 cm	8 Sept 1998	Woodnewton	54471
10 cm	8 Sept 1998	Woodnewton	54471
8.5 cm	12 Aug 1998	Alder Farm	54468
8 cm	8 Sept 1998	Woodnewton	54471
8 cm	8 Sept 1998	Woodnewton	54471
8 cm	12 Aug 1998	Alder Farm	54468
8 cm	11 Aug 1998	Apethorpe	54470
8 cm	3 May 1995	Alder Farm	54461
7.5 cm	8 Sept 1998	Woodnewton	54471

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
Walcot Lodge DS Site	27 May 2018	25 Oct 2018	2
Fotheringhay	23 Oct 2018	23 Oct 2018	1
Bulwick	18 Apr 1995	23 Oct 2018	7
Walcot Lodge US Site	26 May 2018	26 May 2018	1
Alder Farm	3 May 1995	15 Jun 2015	3
Woodnewton	8 Sept 1998	29 May 2015	7
Apethorpe	11 Aug 1998	8 May 2015	2
Downstream Deene Lake	1 May 2015	1 May 2015	1
King's Cliffe	10 Aug 1998	10 Aug 1998	1

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

1995–2018

Survey records by year

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

295

096

097

498

099

000

101

002

003

004

005

106

007

008

109

010

211

212

213

014

515

016

017

518

Fish measured by surveyors

Measured length distribution

See how the 23 measured fish were spread across different length ranges.

Smallest: 4 cm
Lower quarter: 6.5 cm
Median: 7 cm
Upper quarter: 8 cm
Largest: 11 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Willow Brook

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

Chub Roach Gudgeon Perch European eel Dace

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 →