RiverFish

Bullhead · Cottus gobio

Bullhead in the River Worth

Largest measured bullhead: 11.1 cm

The largest bullhead measured in Environment Agency surveys of the River Worth was 11.1 cm, recorded at Bridgehouse Beck on 9 September 2014.

Across 912 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 Worth.

See bullhead records across England →

Most recent observation6 August 2024Haworth
Largest measured bullhead
11.1 cm
Median length
6.1 cm
Fish measured
912
Survey locations
8

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
11.1 cm9 Sept 2014Bridgehouse Beck142752
11 cm9 Sept 2014Bridgehouse Beck142752
9.5 cm16 Aug 2013Rock ramp weir - d/s139686
9.5 cm17 Sept 2007Hermit Hole107933
9.5 cm11 Sept 2007Bridgehouse Beck108590
9.4 cm12 Aug 2009Hermit Hole119881
9.3 cm4 Sept 2014Hermit Hole142754
9.2 cm17 Sept 2007Hermit Hole107933
9.1 cm9 Sept 2014Downstream Ponden Mill (WR)142767
9.1 cm16 Aug 2013Providence Lane139627

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
Haworth17 Aug 20236 Aug 20242
Bridgehouse Beck11 Sept 20076 Aug 20245
Dalton Road12 Sept 201917 Aug 20232
Providence Lane21 Sept 200514 Sept 202111
Downstream Ponden Mill (WR)12 Oct 20009 Sept 201412
Hermit Hole17 Sept 20074 Sept 20144
Rock ramp weir - d/s16 Aug 201316 Aug 20131
Hermit Hole - u/s16 Aug 201316 Aug 20131

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

2000–2024

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 912 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
5.1 cm
Median
6.1 cm
Upper quarter
7 cm
Largest
11.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Worth

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

Brown / sea trout 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 →