Bullhead · Cottus gobio

Bullhead in the Harpers Brook

Largest measured bullhead: 9 cm

The largest bullhead measured in Environment Agency surveys of the Harpers Brook was 9 cm, recorded at Stanion on 13 March 1995.

Across 81 measured bullhead, the median measured length was 6 cm.

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

See bullhead records across England →

Most recent observation24 October 2018Brigstock Cricket Pitch

Largest measured bullhead: 9 cm
Median length: 6 cm
Fish measured: 81
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
9 cm	13 Mar 1995	Stanion	54431
8.5 cm	13 Mar 1995	Stanion	54431
8.5 cm	13 Mar 1995	Stanion	54431
8 cm	23 Mar 1995	Riffle (Harpers Brook TNR)	54436
8 cm	23 Mar 1995	Riffle (Harpers Brook TNR)	54436
8 cm	23 Mar 1995	Riffle (Harpers Brook TNR)	54436
8 cm	16 Mar 1995	Downstream Islip Gauging Weir	54435
8 cm	16 Mar 1995	Downstream Islip Gauging Weir	54435
8 cm	16 Mar 1995	Downstream Islip Gauging Weir	54435
8 cm	16 Mar 1995	Downstream Islip Gauging Weir	54435

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
Brigstock Cricket Pitch	6 Mar 1989	24 Oct 2018	2
Downstream Islip Gauging Weir	21 Feb 1992	23 Oct 2018	5
Stanion	14 Mar 1989	10 Apr 2015	4
Downstream Brigstock STW	14 Mar 1989	10 Apr 2015	4
Sudborough	13 Mar 1995	9 Apr 2015	2
Lowick	15 Mar 1995	9 Apr 2015	2
Riffle (Harpers Brook TNR)	23 Mar 1995	23 Mar 1995	1
Pool 2 (Harpers Brook TNR)	13 Mar 1995	13 Mar 1995	1
Pool 1 (Harpers Brook TNR)	13 Mar 1995	13 Mar 1995	1

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

1989–2018

Survey records by year

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

389

090

091

392

093

094

895

096

097

098

099

100

001

002

003

004

005

106

007

008

009

010

011

012

013

014

415

016

017

218

Fish measured by surveyors

Measured length distribution

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

Smallest: 3.5 cm
Lower quarter: 5 cm
Median: 6 cm
Upper quarter: 7 cm
Largest: 9 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Harpers Brook

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

Minnow Chub Dace Stone loach Roach Brown / sea trout

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 →