RiverFish

Bullhead · Cottus gobio

Bullhead in the St Ives Chub Stream

Largest measured bullhead: 8.7 cm

The largest bullhead measured in Environment Agency surveys of the St Ives Chub Stream was 8.7 cm, recorded at St Ives Chub Stream on 17 April 2013.

Across 71 measured bullhead, the median measured length was 6.3 cm.

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

See bullhead records across England →

Most recent observation8 April 2025St Ives Chub Stream · 2 fish
Largest measured bullhead
8.7 cm
Median length
6.3 cm
Fish measured
71
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
8.7 cm17 Apr 2013St Ives Chub Stream135879
8.6 cm8 Apr 2025St Ives Chub Stream176250
8.3 cm17 Apr 2013St Ives Chub Stream135879
8.2 cm17 Apr 2013St Ives Chub Stream135879
7.9 cm17 Apr 2013St Ives Chub Stream135879
7.8 cm17 Apr 2013St Ives Chub Stream135879
7.7 cm17 Apr 2013St Ives Chub Stream135879
7.6 cm17 Apr 2013St Ives Chub Stream135879
7.6 cm17 Apr 2013St Ives Chub Stream135879
7.5 cm2 May 2019St Ives Chub Stream154454

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
St Ives Chub Stream4 Dec 19988 Apr 20255
St Ives Chub Stream (Eel Monitoring)9 Jul 20139 Jul 20131

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

1998–2025

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 71 measured fish were spread across different length ranges.

Smallest
3.6 cm
Lower quarter
5.8 cm
Median
6.3 cm
Upper quarter
7 cm
Largest
8.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the St Ives Chub Stream

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

European eel Chub Dace Gudgeon Perch Roach

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 →