Bullhead · Cottus gobio

Bullhead in the River Beult

Largest measured bullhead: 9.6 cm

The largest bullhead measured in Environment Agency surveys of the River Beult was 9.6 cm, recorded at Bull Bridge Bethersden on 29 June 2016.

Across 51 measured bullhead, the median measured length was 6.6 cm.

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

See bullhead records across England →

Most recent observation11 June 2025Downstream Headcorn · 2 fish

Largest measured bullhead: 9.6 cm
Median length: 6.6 cm
Fish measured: 51
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
9.6 cm	29 Jun 2016	Bull Bridge Bethersden	148349
8.7 cm	29 Jun 2016	Bull Bridge Bethersden	148349
8.6 cm	15 May 2013	Bull Bridge Bethersden	136031
8.2 cm	9 May 2013	Downstream Headcorn	135966
8.2 cm	9 May 2013	Downstream Headcorn	135966
8.2 cm	9 May 2013	Downstream Headcorn	135966
8.2 cm	9 May 2013	Downstream Headcorn	135966
8.1 cm	9 May 2013	Downstream Headcorn	135966
8 cm	7 Jun 2022	Downstream Headcorn	160975
8 cm	9 May 2013	Downstream Headcorn	135966

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
Downstream Headcorn	18 Jun 2004	11 Jun 2025	8
Bull Bridge Bethersden	15 May 2013	29 Jun 2016	2
Smarden	5 May 2010	8 May 2013	2
Slaney Place	30 Apr 2013	30 Apr 2013	1

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

2004–2025

Survey records by year

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

104

005

006

007

108

009

210

011

012

413

014

015

216

017

018

119

020

021

122

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 51 measured fish were spread across different length ranges.

Smallest: 2.1 cm
Lower quarter: 5.7 cm
Median: 6.6 cm
Upper quarter: 7.6 cm
Largest: 9.6 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Beult

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

Roach Pike Chub Gudgeon Perch Bleak

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 →