RiverFish

Bullhead · Cottus gobio

Bullhead in the Austwick Beck

Largest measured bullhead: 9 cm

The largest bullhead measured in Environment Agency surveys of the Austwick Beck was 9 cm, recorded at Wharfe Gill Syke on 20 July 2011.

Across 43 measured bullhead, the median measured length was 5.9 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Austwick Beck.

See bullhead records across England →

Most recent observation11 August 2025A65 Bridge
Largest measured bullhead
9 cm
Median length
5.9 cm
Fish measured
43
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 cm20 Jul 2011Wharfe Gill Syke129905
7.5 cm20 Jul 2011Wharfe Gill Syke129905
7.3 cm20 Jul 2011Wharfe Gill Syke129905
7.2 cm20 Jul 2011Wharfe Gill Syke129905
7 cm20 Jul 2011Wharfe Gill Syke129905
7 cm20 Jul 2011Wharfe Gill Syke129905
6.9 cm20 Jul 2011Wharfe Gill Syke129905
6.8 cm20 Jul 2011Flascoe Bridge129906
6.6 cm20 Jul 2011Flascoe Bridge129906
6.6 cm20 Jul 2011Flascoe Bridge129906

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 Dam House Bridge at Silloth House28 Jul 199711 Aug 20255
A65 Bridge17 Jul 199111 Aug 20259
Wharfe Gill Syke20 Jul 201120 Jul 20111
Flascoe Bridge28 Jul 199720 Jul 20112
Waters Farm Bridge3 Oct 19973 Oct 19971
Village Bridge16 Jul 19913 Oct 19972
Wood End Farm17 Jul 199128 Jul 19972
Upstream Sowerthwaite Farm28 Jul 199728 Jul 19971
Town Head28 Jul 199728 Jul 19971

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

1991–2025

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 43 measured fish were spread across different length ranges.

Smallest
2.2 cm
Lower quarter
5.1 cm
Median
5.9 cm
Upper quarter
6.6 cm
Largest
9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Austwick Beck

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

Brown / sea trout European eel Atlantic salmon

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 →