RiverFish

Bullhead · Cottus gobio

Bullhead in the River Wye

Largest measured bullhead: 9.4 cm

The largest bullhead measured in Environment Agency surveys of the River Wye was 9.4 cm, recorded at Millers Dale on 10 September 2012.

Across 290 measured bullhead, the median measured length was 6.3 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 Wye.

See bullhead records across England →

Most recent observation28 August 2025Millers Dale
Largest measured bullhead
9.4 cm
Median length
6.3 cm
Fish measured
290
Survey locations
9

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
9.4 cm10 Sept 2012Millers Dale133804
8.8 cm10 Sept 2012Millers Dale133804
8.8 cm10 Sept 2012Millers Dale133804
8.8 cm25 Aug 2011Millers Dale127633
8.7 cm1 Sept 2015Caudwell Mill147247
8.6 cm24 Aug 2015Monsal Dale146195
8.6 cm20 Aug 2014Caudwell Mill144272
8.5 cm22 Aug 2013Millers Dale139767
8.5 cm22 Aug 2013Millers Dale139767
8.3 cm22 Aug 2013Millers Dale139767

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
Millers Dale15 Feb 199928 Aug 202516
Caudwell Mill20 Aug 20141 Sept 20152
Monsal Dale13 Jul 200724 Aug 20153
Buxton at Bridge Farm6 Aug 20156 Aug 20151
Ashwood Park8 Jun 20056 Aug 20153
Chee Dale6 Oct 20096 Oct 20091
Wye Dale10 Feb 199921 Aug 20093
Haddon Hall10 Jun 200510 Jun 20051
Pavillon Gardens2 Feb 19982 Feb 19981

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

1998–2025

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 290 measured fish were spread across different length ranges.

Smallest
2.2 cm
Lower quarter
5.6 cm
Median
6.3 cm
Upper quarter
7.3 cm
Largest
9.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Wye

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

Brown / sea trout Rainbow trout

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 →