Bullhead · Cottus gobio

Bullhead in the Black Brook

Largest measured bullhead: 10.8 cm

The largest bullhead measured in Environment Agency surveys of the Black Brook was 10.8 cm, recorded at Downstream Garendon Park on 24 April 2012.

Across 74 measured bullhead, the median measured length was 7.5 cm.

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

See bullhead records across England →

Most recent observation18 May 2012Little Garendon · 51 fish

Largest measured bullhead: 10.8 cm
Median length: 7.5 cm
Fish measured: 74
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
10.8 cm	24 Apr 2012	Downstream Garendon Park	131128
10.2 cm	24 Apr 2012	Downstream Garendon Park	131128
10 cm	24 Apr 2012	Downstream Garendon Park	131128
9.8 cm	24 Apr 2012	Downstream Garendon Park	131128
9.7 cm	18 May 2012	Little Garendon	131546
9.7 cm	24 Apr 2012	Downstream Garendon Park	131128
9.6 cm	18 May 2012	Shepshed	131378
9.5 cm	24 Apr 2012	Downstream Garendon Park	131128
9.2 cm	18 May 2012	Shepshed	131378
9.1 cm	18 May 2012	Little Garendon	131546

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
Shepshed	23 Apr 1997	18 May 2012	3
Little Garendon	18 May 2012	18 May 2012	1
Downstream Garendon Park	9 May 2006	24 Apr 2012	2

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

1997–2012

Survey records by year

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

197

098

099

000

001

002

003

004

005

206

007

008

009

010

011

312

Fish measured by surveyors

Measured length distribution

See how the 74 measured fish were spread across different length ranges.

Smallest: 3.8 cm
Lower quarter: 6.3 cm
Median: 7.5 cm
Upper quarter: 8.4 cm
Largest: 10.8 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Black Brook

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

3-spined stickleback Minnow 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 →