RiverFish

Bullhead · Cottus gobio

Bullhead in the River Nidd

Largest measured bullhead: 10.3 cm

The largest bullhead measured in Environment Agency surveys of the River Nidd was 10.3 cm, recorded at Summerbridge on 21 August 2013.

Across 843 measured bullhead, the median measured length was 6.1 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 Nidd.

See bullhead records across England →

Most recent observation21 August 2025Lofthouse d/s
Largest measured bullhead
10.3 cm
Median length
6.1 cm
Fish measured
843
Survey locations
20

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
10.3 cm21 Aug 2013Summerbridge138495
9.9 cm21 Aug 2013Summerbridge138495
9.6 cm23 Jun 2016Cowthorpe148274
9.6 cm23 Jun 2016Cowthorpe148274
9.6 cm9 Sept 2015Scotton Mill146305
9.5 cm22 Jul 2015Goldsborough145554
9.4 cm21 Sept 2017Lofthouse d/s151762
9.4 cm9 Sept 2015Scotton Mill146305
9.4 cm8 Sept 2015Summerbridge146316
9.4 cm25 Jun 2015Knaresborough Bypass145167

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
Lofthouse d/s19 Sept 200121 Aug 202517
Kirk Hammerton - Fry Survey11 Sept 201013 Aug 20253
Knaresborough Bypass5 Aug 20049 Jul 202514
Ribston Park (NEW 2018)3 Jul 20198 Jul 20254
Cowthorpe23 Aug 20027 Jul 202518
Skip Bridge16 Jul 202423 Jun 20252
Scotton Mill14 Jun 200512 Sept 20245
Summerbridge9 Jun 20054 Sept 20245
Moor Monkton27 Jun 202227 Jun 20221
Ribston Park26 Aug 20033 Jul 201914
Nun Monkton21 Aug 200218 Jul 20179
Conyngham Hall28 Sept 201528 Sept 20151
u/s Pately Bridge30 Oct 200124 Sept 20154
d/s Glasshouse WTW13 Jun 20059 Sept 20152
u/s Hampsthwaite Bridge9 Jun 20057 Sept 20153
Birstwith13 Jun 20057 Sept 20153
Goldsborough22 Jul 201522 Jul 20151
Kirk Hammerton21 Aug 200220 Jun 20138
Killinghall14 Jun 200514 Jun 20051
Newhouses4 Sept 20034 Sept 20031

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

2001–2025

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 843 measured fish were spread across different length ranges.

Smallest
0.8 cm
Lower quarter
4.2 cm
Median
6.1 cm
Upper quarter
7.2 cm
Largest
10.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Nidd

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

Minnow Stone loach Grayling Brown / sea trout European eel Gudgeon

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 →