Bullhead · Cottus gobio

Bullhead in the River Lincolnshire Specials

Largest measured bullhead: 12 cm

The largest bullhead measured in Environment Agency surveys of the River Lincolnshire Specials was 12 cm, recorded at Colsterworth A on 12 November 2009.

Across 37 measured bullhead, the median measured length was 7.2 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 Lincolnshire Specials.

See bullhead records across England →

Most recent observation31 August 2016Colsterworth A

Largest measured bullhead: 12 cm
Median length: 7.2 cm
Fish measured: 37
Survey locations: 2

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
12 cm	12 Nov 2009	Colsterworth A	120230
10.8 cm	12 Nov 2009	Colsterworth A	120230
10.6 cm	24 Apr 2012	North Witham Upstream Site Pollution April 2012	131160
10.6 cm	24 Apr 2012	North Witham Upstream Site Pollution April 2012	131160
10.3 cm	24 Apr 2012	North Witham Upstream Site Pollution April 2012	131160
10.3 cm	24 Apr 2012	North Witham Upstream Site Pollution April 2012	131160
9.9 cm	24 Apr 2012	North Witham Upstream Site Pollution April 2012	131160
9.4 cm	24 Apr 2012	North Witham Upstream Site Pollution April 2012	131160
9.3 cm	24 Jun 2008	Colsterworth A	111431
9.2 cm	24 Apr 2012	North Witham Upstream Site Pollution April 2012	131160

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
Colsterworth A	24 Jun 2008	31 Aug 2016	4
North Witham Upstream Site Pollution April 2012	24 Apr 2012	24 Apr 2012	1

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

2008–2016

Survey records by year

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

108

109

010

011

212

013

014

015

116

Fish measured by surveyors

Measured length distribution

See how the 37 measured fish were spread across different length ranges.

Smallest: 4.2 cm
Lower quarter: 6.5 cm
Median: 7.2 cm
Upper quarter: 9.2 cm
Largest: 12 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Lincolnshire Specials

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

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 →