Bullhead · Cottus gobio

Bullhead in the River Anton

Largest measured bullhead: 7.3 cm

The largest bullhead measured in Environment Agency surveys of the River Anton was 7.3 cm, recorded at Artists Way on 31 August 2006.

Across 56 measured bullhead, the median measured length was 5.4 cm.

Surveyors recorded weights for 19 bullhead. The median was 0.1 oz (0.003 kg) and the largest recorded weight was 0.2 oz (0.007 kg).

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

See bullhead records across England →

Most recent observation8 September 2025Cottonworth · 2 fish

Largest measured bullhead: 7.3 cm
Median length: 5.4 cm
Fish measured: 56
Survey locations: 5

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
7.3 cm	31 Aug 2006	Artists Way	101775
7 cm	8 Sept 2025	Cottonworth	178939
7 cm	31 Aug 2006	Artists Way	101775
7 cm	31 Aug 2006	Artists Way	101775
6.8 cm	31 Aug 2006	Artists Way	101775
6.6 cm	31 Aug 2006	Artists Way	101775
6.5 cm	31 Aug 2006	Artists Way	101775
6.5 cm	31 Aug 2006	Artists Way	101775
6.4 cm	31 Aug 2006	Artists Way	101775
6.4 cm	31 Aug 2006	Artists Way	101775

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
Cottonworth	30 Apr 2013	8 Sept 2025	4
Beat 6 Carrier	8 Jul 2004	29 Sept 2016	3
Rooksbury Mill	9 Sept 2010	8 Sept 2016	2
Artists Way	4 Sept 2002	2 May 2013	5
Confluence	16 Jul 2004	16 Jul 2004	1

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

2002–2025

Survey records by year

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

102

103

304

005

106

007

008

009

210

011

012

213

014

015

216

017

018

019

020

021

022

123

124

125

Fish measured by surveyors

Measured length distribution

See how the 56 measured fish were spread across different length ranges.

Smallest: 2 cm
Lower quarter: 3.8 cm
Median: 5.4 cm
Upper quarter: 6.2 cm
Largest: 7.3 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 19 bullhead. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.1 oz (0.002 kg)
Median: 0.1 oz (0.003 kg)
Upper quarter: 0.2 oz (0.0045 kg)
Heaviest: 0.2 oz (0.007 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Anton

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

Brown / sea trout Grayling European eel Brook lamprey 3-spined stickleback Pike

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 →