Bullhead · Cottus gobio

Bullhead in the Micker Brook

Largest measured bullhead: 10.4 cm

The largest bullhead measured in Environment Agency surveys of the Micker Brook was 10.4 cm, recorded at Mrmi20 on 5 August 2003.

Across 246 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 Micker Brook.

See bullhead records across England →

Most recent observation6 August 2025Mrmi20

Largest measured bullhead: 10.4 cm
Median length: 6.8 cm
Fish measured: 246
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
10.4 cm	5 Aug 2003	Mrmi20	76603
10.1 cm	5 Aug 2003	Mrmi15	76602
9.7 cm	5 Aug 2003	Mrmi15	76602
9.5 cm	6 Aug 2003	Mrmi05	76600
9.4 cm	4 Aug 2003	Mrmi10	76601
9.3 cm	6 Aug 2003	Mrmi05	76600
9.3 cm	5 Aug 2003	Mrmi20	76603
9.3 cm	5 Aug 2003	Mrmi15	76602
9.2 cm	6 Aug 2003	Mrmi05	76600
9 cm	5 Aug 2003	Mrmi20	76603

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
Mrmi20	5 Aug 2003	6 Aug 2025	5
Mrmi10	28 Aug 2002	10 Jul 2025	8
Mrmi01	11 Oct 2013	10 Jul 2025	3
Mrmi05	6 Aug 2003	6 Aug 2003	1
Mrmi15	5 Aug 2003	5 Aug 2003	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

403

204

205

206

007

008

109

010

111

012

113

014

015

016

017

018

019

020

021

022

023

124

325

Fish measured by surveyors

Measured length distribution

See how the 246 measured fish were spread across different length ranges.

Smallest: 2.7 cm
Lower quarter: 5.9 cm
Median: 6.8 cm
Upper quarter: 7.6 cm
Largest: 10.4 cm

0–99 mm

244

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Micker Brook

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

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