Bullhead · Cottus gobio

Bullhead in the Sheldon Stream

Largest measured bullhead: 8 cm

The largest bullhead measured in Environment Agency surveys of the Sheldon Stream was 8 cm, recorded at Loosemoor (Sp) on 3 June 2019.

Across 77 measured bullhead, the median measured length was 5.5 cm.

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

See bullhead records across England →

Most recent observation1 June 2026Ashill (Sp) · 51 fish

Largest measured bullhead: 8 cm
Median length: 5.5 cm
Fish measured: 77
Survey locations: 6

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 cm	3 Jun 2019	Loosemoor (Sp)	154554
7.5 cm	3 Jun 2019	Loosemoor (Sp)	154554
7.5 cm	3 Jun 2019	Loosemoor (Sp)	154554
7.2 cm	3 Jun 2019	Ashill (Sp)	154555
7.2 cm	3 Jun 2019	Ashill (Sp)	154555
7 cm	3 Jun 2019	Ashill (Sp)	154555
7 cm	3 Jun 2019	Loosemoor (Sp)	154554
7 cm	3 Jun 2019	Loosemoor (Sp)	154554
6.9 cm	3 Jun 2019	Ashill (Sp)	154555
6.6 cm	3 Jun 2019	Ashill (Sp)	154555

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
Ashill (Sp)	22 May 1997	1 Jun 2026	6
Loosemoor (Sp)	21 May 1997	28 May 2026	6
Upstream Hollies Fish Farm*	25 May 2011	25 May 2011	1
Downstream Shoot Lane Bridge*	25 May 2011	25 May 2011	1
Downstream Hack Penn Bridge*	25 May 2011	25 May 2011	1
Downstream Hollies (Sp)*	22 May 1997	14 Jun 2000	2

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

1997–2026

Survey records by year

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

397

098

099

300

001

002

003

004

005

006

007

208

009

010

311

012

213

014

015

016

017

018

219

020

021

022

023

024

025

226

Fish measured by surveyors

Measured length distribution

See how the 77 measured fish were spread across different length ranges.

Smallest: 4 cm
Lower quarter: 4.7 cm
Median: 5.5 cm
Upper quarter: 6.2 cm
Largest: 8 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Sheldon Stream

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

Brown / sea trout European eel Stone 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 →