Bullhead · Cottus gobio

Bullhead in the River Scout Dike

Largest measured bullhead: 12.4 cm

The largest bullhead measured in Environment Agency surveys of the River Scout Dike was 12.4 cm, recorded at Downstream B6462 on 20 August 2008.

Across 58 measured bullhead, the median measured length was 6.8 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 Scout Dike.

See bullhead records across England →

Most recent observation29 September 2023Nether Mill Fishery

Largest measured bullhead: 12.4 cm
Median length: 6.8 cm
Fish measured: 58
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
12.4 cm	20 Aug 2008	Downstream B6462	114907
9 cm	6 Sept 2011	Downstream B6462	128624
9 cm	15 Aug 2003	Downstream Compensation Release	78736
8.9 cm	15 Aug 2003	Downstream Compensation Release	78736
8.9 cm	15 Aug 2003	Downstream Compensation Release	78736
8.8 cm	15 Aug 2003	Downstream Compensation Release	78736
8.6 cm	6 Sept 2011	Nether Mill Fishery	128628
8.6 cm	6 Sept 2011	Nether Mill Fishery	128628
8.6 cm	15 Aug 2003	Downstream Compensation Release	78736
8.2 cm	28 Sept 2004	Downstream B6462	84125

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
Nether Mill Fishery	20 Aug 2008	29 Sept 2023	4
Downstream B6462	7 Jan 1986	6 Sept 2011	9
Downstream Compensation Release	15 Aug 2003	15 Aug 2003	1
Above Don Confluence	31 Oct 1990	31 Oct 1990	1

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

1986–2023

Survey records by year

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

186

087

088

089

290

091

092

093

094

095

096

197

098

099

100

101

002

103

104

005

006

007

208

109

010

211

012

013

014

015

016

117

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 58 measured fish were spread across different length ranges.

Smallest: 2.8 cm
Lower quarter: 5.6 cm
Median: 6.8 cm
Upper quarter: 7.7 cm
Largest: 12.4 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Scout Dike

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

3-spined stickleback Brown / sea trout Roach Perch Stone loach Minnow

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 →