RiverFish

Bullhead · Cottus gobio

Bullhead in the River Calder

Largest measured bullhead: 8.5 cm

The largest bullhead measured in Environment Agency surveys of the River Calder was 8.5 cm, recorded at North Padiham on 21 July 2011.

Across 13 measured bullhead, the median measured length was 7.1 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 Calder.

See bullhead records across England →

Most recent observation29 August 2025Downstream Altham Bridge
Largest measured bullhead
8.5 cm
Median length
7.1 cm
Fish measured
13
Survey locations
16

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
8.5 cm21 Jul 2011North Padiham129902
8.1 cm21 Jul 2011North Padiham129902
8 cm21 Jul 2011North Padiham129902
7.5 cm21 Jul 2011North Padiham129902
7.2 cm21 Jul 2011North Padiham129902
7.1 cm21 Jul 2011North Padiham129902
7.1 cm21 Jul 2011North Padiham129902
6 cm21 Jul 2011North Padiham129902
5.8 cm21 Jul 2011North Padiham129902
5.4 cm21 Jul 2011North Padiham129902

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
Downstream Altham Bridge24 Jun 201329 Aug 202510
Upstream A59 Road Bridge18 May 20101 Jul 20248
Foxcroft13 Jul 201017 Aug 20236
Pendle Hall21 May 19843 Jul 20236
Inghams Farm ptc Pendle Water6 Jul 199321 Aug 20152
Gawthorpe Hall14 Jul 201018 Sept 20143
Lune Street, Padiham31 Aug 201112 Sept 20142
Upstream Pendle Hall14 Jul 201011 Sept 20142
North Padiham21 Jul 201121 Jul 20111
Downstream A59 Road Bridge8 Sept 19998 Sept 19991
Downstream Home Farm6 Jul 199327 Jul 19992
Townley Park Nursery23 Jul 199923 Jul 19991
Townley Park Golf Course30 Jun 199323 Jul 19992
Stoneyholme M65 Bridge6 Jul 19936 Jul 19931
Townley High School30 Jun 199330 Jun 19931
Barcroft Hall28 Jun 199328 Jun 19931

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

1984–2025

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 13 measured fish were spread across different length ranges.

Smallest
4.7 cm
Lower quarter
5.4 cm
Median
7.1 cm
Upper quarter
7.5 cm
Largest
8.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Calder

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

European eel Brown / sea trout Chub Gudgeon Roach Perch

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 →