RiverFish

Bullhead · Cottus gobio

Bullhead in the River Siblyback

Largest measured bullhead: 9.9 cm

The largest bullhead measured in Environment Agency surveys of the River Siblyback was 9.9 cm, recorded at d/s Siblyback Lake on 9 September 2021.

Across 113 measured bullhead, the median measured length was 5.4 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 Siblyback.

See bullhead records across England →

Most recent observation26 September 2023d/s Siblyback Lake · 53 fish
Largest measured bullhead
9.9 cm
Median length
5.4 cm
Fish measured
113
Survey locations
2

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
9.9 cm9 Sept 2021d/s Siblyback Lake160532
9.9 cm9 Sept 2021d/s Siblyback Lake160532
9.7 cm9 Sept 2021d/s Siblyback Lake160532
9.1 cm19 Sept 2019d/s Siblyback Lake155646
9.1 cm27 Aug 1997d/s Siblyback Lake135566
9 cm19 Sept 2019d/s Siblyback Lake155646
8.9 cm9 Sept 2021d/s Siblyback Lake160532
8.5 cm26 Sept 2023d/s Siblyback Lake163394
8.5 cm9 Sept 2021d/s Siblyback Lake160532
8.5 cm19 Sept 2019d/s Siblyback Lake155646

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
d/s Siblyback Lake12 Jul 199426 Sept 20238
u/s Siblyback Lake27 Aug 199727 Aug 19971

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

1994–2023

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 113 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
3.9 cm
Median
5.4 cm
Upper quarter
7.3 cm
Largest
9.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Siblyback

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

Brown / sea trout European eel Atlantic salmon 3-spined stickleback Minnow

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 →