RiverFish

Bullhead · Cottus gobio

Bullhead in the River Middle Ouse

Largest measured bullhead: 8.3 cm

The largest bullhead measured in Environment Agency surveys of the River Middle Ouse was 8.3 cm, recorded at Houghton Lock on 19 July 1999.

Across 13 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 River Middle Ouse.

See bullhead records across England →

Most recent observation21 October 2025Hemingford Meadow · 1 fish
Largest measured bullhead
8.3 cm
Median length
6.3 cm
Fish measured
13
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
8.3 cm19 Jul 1999Houghton Lock29191
7.8 cm12 Jul 1999Castle Hills Huntingdon29188
7.5 cm2 May 2007Brownshill Pumping Station (Eel Monitoring)105260
7.2 cm17 Aug 2015Longholme145988
7 cm31 Jul 2006Hartford Church100450
6.4 cm2 Oct 2019US Dolphin Meadow155824
6.3 cm8 Nov 1989Pike & Eel29201
6.3 cm8 Nov 1989Pike & Eel29201
6.2 cm28 Sept 2016US Dolphin Meadow149560
6.2 cm20 Aug 2015St Neots Common145986

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
Hemingford Meadow21 Oct 202521 Oct 20251
US Dolphin Meadow28 Sept 20162 Oct 20192
St Neots Common20 Aug 201520 Aug 20151
Longholme17 Aug 201517 Aug 20151
Pike & Eel8 Nov 198910 Sept 20103
Hartford Church31 Jul 200620 Aug 20103
Portholme Meadow19 Aug 201019 Aug 20101
Little Paxton1 Sept 20081 Sept 20081
Brownshill Pumping Station (Eel Monitoring)2 May 20072 May 20071
Hermitage Lock Drain (Eel Monitoring)25 Apr 200725 Apr 20071
Houghton Lock19 Jul 199919 Jul 19991
Castle Hills Huntingdon12 Jul 199912 Jul 19991

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

1989–2025

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 13 measured fish were spread across different length ranges.

Smallest
5.3 cm
Lower quarter
6.2 cm
Median
6.3 cm
Upper quarter
7.2 cm
Largest
8.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Middle Ouse

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

Perch Roach Pike Bleak Gudgeon Common bream

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 →