RiverFish

Bullhead · Cottus gobio

Bullhead in the River Goyt

Largest measured bullhead: 12.5 cm

The largest bullhead measured in Environment Agency surveys of the River Goyt was 12.5 cm, recorded at Gygo15 on 24 June 2003.

Across 395 measured bullhead, the median measured length was 7.3 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 Goyt.

See bullhead records across England →

Most recent observation10 September 2025Gygo17
Largest measured bullhead
12.5 cm
Median length
7.3 cm
Fish measured
395
Survey locations
21

Individual EA measurements

Largest measured bullhead

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
12.5 cm24 Jun 2003Gygo1576271
11.3 cm20 Aug 2002Gygo1055550
11 cm24 Jun 2003Gygo1076270
10.4 cm20 Aug 2002Gygo1055550
10.3 cm24 Jun 2003Gygo1076270
10.3 cm20 Aug 2002Gygo1055550
10.2 cm24 Jun 2003Gygo1076270
10 cm29 Jul 2004Gygo1580827
10 cm24 Jun 2003Gygo1576271
10 cm21 Aug 2002Gygo1555570

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 surveyedFirst recordedLast recordedVisits finding bullhead
Gygo1715 Aug 200610 Sept 20253
Gygo2015 Sept 19984 Sept 20258
Gygo143 Sept 20253 Sept 20251
Gygo133 Sept 20253 Sept 20251
Gygo072 Sept 20252 Sept 20251
Gygo0520 Aug 20022 Sept 20252
Gygo1020 Aug 20029 Jul 202511
Gygo067 Aug 20078 Jul 20253
Gygo047 Aug 200719 Jun 20254
Go0327 Jun 199417 Jun 202525
Go0225 May 199417 Jun 202526
Gywb0110 Aug 200712 Jun 20253
Gygo2529 Jul 200419 Jul 20135
Gygo3025 Jun 20036 Jul 20115
GYGO20b13 Aug 200913 Aug 20091
Gygo1521 Aug 200211 Aug 20097
Gygo05.521 Nov 200621 Nov 20061
Gygo2915 Aug 200615 Aug 20061
GYGO20a15 Aug 200615 Aug 20061
Gygo242 Sept 20022 Sept 20021
Go0815 Sept 199815 Sept 19981

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

1994–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 395 measured fish were spread across different length ranges.

Smallest
2.1 cm
Lower quarter
5.4 cm
Median
7.3 cm
Upper quarter
8.3 cm
Largest
12.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Goyt

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

Brown / sea trout Grayling Stone loach 3-spined stickleback Perch Brook lamprey

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 →