Bullhead · Cottus gobio

Bullhead in the Old River Lea

Largest measured bullhead: 8.1 cm

The largest bullhead measured in Environment Agency surveys of the Old River Lea was 8.1 cm, recorded at Cornmill Meadows 3 (Mile Nursery) on 13 May 2015.

Across 5 measured bullhead, the median measured length was 7.1 cm.

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

See bullhead records across England →

Most recent observation21 May 2026Cornmill Meadows 3 (Mile Nursery)

Largest measured bullhead: 8.1 cm
Median length: 7.1 cm
Fish measured: 5
Survey locations: 1

Individual EA measurements

Largest measured bullhead

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
8.1 cm	13 May 2015	Cornmill Meadows 3 (Mile Nursery)	144661
7.2 cm	13 May 2015	Cornmill Meadows 3 (Mile Nursery)	144661
7.1 cm	13 May 2015	Cornmill Meadows 3 (Mile Nursery)	144661
5.4 cm	13 May 2015	Cornmill Meadows 3 (Mile Nursery)	144661
1.7 cm	13 May 2015	Cornmill Meadows 3 (Mile Nursery)	144661

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 surveyed	First recorded	Last recorded	Visits finding bullhead
Cornmill Meadows 3 (Mile Nursery)	1 May 2007	21 May 2026	12

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

2007–2026

Survey records by year

Each bar shows how many survey visits recorded bullhead that year.

107

108

109

010

011

012

113

014

115

116

117

118

119

020

021

022

123

124

025

126

Fish measured by surveyors

Measured length distribution

See how the 5 measured fish were spread across different length ranges.

Smallest: 1.7 cm
Lower quarter: 5.4 cm
Median: 7.1 cm
Upper quarter: 7.2 cm
Largest: 8.1 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Old River Lea

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

Perch Roach Chub Pike Tench 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 →