Bullhead · Cottus gobio

Bullhead in the River Smallbrook

Largest measured bullhead: 8.5 cm

The largest bullhead measured in Environment Agency surveys of the River Smallbrook was 8.5 cm, recorded at Scotland on 31 August 2016.

Across 117 measured bullhead, the median measured length was 4.6 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 Smallbrook.

See bullhead records across England →

Most recent observation26 May 2022Headon · 8 fish

Largest measured bullhead: 8.5 cm
Median length: 4.6 cm
Fish measured: 117
Survey locations: 3

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
8.5 cm	31 Aug 2016	Scotland	149150
8 cm	30 May 2013	Headon	136164
7.9 cm	24 May 2016	Headon	148069
7.8 cm	24 May 2016	Headon	148069
7.2 cm	24 May 2016	Headon	148069
6.9 cm	24 May 2016	Headon	148069
6.8 cm	31 Aug 2016	Scotland	149150
6.7 cm	31 Aug 2016	Scotland	149150
6.7 cm	24 May 2016	Headon	148069
6.6 cm	24 May 2016	Headon	148069

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
Headon	3 Sept 1993	26 May 2022	5
Scotland	3 Sept 1993	31 Aug 2016	7
Youldon	2 Oct 1996	8 Oct 1999	2

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

1993–2022

Survey records by year

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

293

094

095

396

097

098

399

000

001

002

003

104

005

006

007

008

009

110

011

012

113

014

015

216

017

018

019

020

021

122

Fish measured by surveyors

Measured length distribution

See how the 117 measured fish were spread across different length ranges.

Smallest: 3.1 cm
Lower quarter: 4.1 cm
Median: 4.6 cm
Upper quarter: 5.3 cm
Largest: 8.5 cm

0–99 mm

117

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Smallbrook

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

Minnow Brown / sea trout 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 →