RiverFish

Bullhead · Cottus gobio

Bullhead in the River Tove

Largest measured bullhead: 11.1 cm

The largest bullhead measured in Environment Agency surveys of the River Tove was 11.1 cm, recorded at Milford Leys Farm on 11 April 2016.

Across 564 measured bullhead, the median measured length was 6.5 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 Tove.

See bullhead records across England →

Most recent observation15 April 2026Milford Leys Farm
Largest measured bullhead
11.1 cm
Median length
6.5 cm
Fish measured
564
Survey locations
12

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 cm11 Apr 2016Milford Leys Farm147922
11 cm22 Mar 2016Cappenham Bridge147909
11 cm1 Apr 2015US Grove Farm Shutlanger144499
10.9 cm23 Mar 2016DS Cappenham Bridge147921
10.5 cm23 Mar 2016DS Cappenham Bridge147921
10.3 cm23 Mar 2016DS Cappenham Bridge147921
10 cm23 Mar 2016DS Cappenham Bridge147921
9.9 cm4 Apr 2016DS A508 Lay-by147918
9.8 cm6 Oct 1987Towcester28998
9.6 cm1 Apr 2015DS Cappenham Bridge144498

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
Milford Leys Farm22 Nov 199415 Apr 20267
Grafton Regis5 Jun 199114 Apr 20269
Cappenham Bridge5 Oct 19879 Apr 20269
Cosgrove Lodge5 May 198827 Aug 20258
DS A508 Lay-by3 Jan 19954 Apr 20166
US Grove Farm Shutlanger1 Apr 201523 Mar 20162
DS Cappenham Bridge1 Apr 201523 Mar 20162
Grove Farm Shutlanger16 Nov 19948 Apr 20152
Bozenham Mill17 Nov 19943 Feb 19982
Towcester6 Oct 19872 Feb 19983
Yardley Gobion24 Nov 199424 Nov 19941
Castlethorpe3 May 198823 Nov 19943

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

1987–2026

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 564 measured fish were spread across different length ranges.

Smallest
3.3 cm
Lower quarter
5.6 cm
Median
6.5 cm
Upper quarter
7.5 cm
Largest
11.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Tove

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

Dace Stone loach Chub Gudgeon Minnow Spined loach

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 →