Stone loach · Barbatula barbatula

Stone loach in the Stoulton Brook

Largest measured stone loach: 10 cm

The largest stone loach measured in Environment Agency surveys of the Stoulton Brook was 10 cm, recorded at Stoulton Brook on 15 June 1994.

Across 14 measured stone loach, the median measured length was 8.5 cm.

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

See stone loach records across England →

Most recent observation7 June 2013Deerfold Wood · 3 fish

Largest measured stone loach: 10 cm
Median length: 8.5 cm
Fish measured: 14
Survey locations: 2

Individual EA measurements

Largest measured stone loach

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
10 cm	15 Jun 1994	Stoulton Brook	80956
9.8 cm	7 Jun 2013	Deerfold Wood	136253
9.1 cm	20 Feb 1992	Stoulton Brook	80960
8.9 cm	20 Feb 1992	Stoulton Brook	80960
8.5 cm	7 Jun 2013	Deerfold Wood	136253
8.5 cm	20 Feb 1992	Stoulton Brook	80960
8.5 cm	20 Feb 1992	Stoulton Brook	80960
8.5 cm	20 Feb 1992	Stoulton Brook	80960
8.3 cm	7 Jun 2013	Deerfold Wood	136253
8 cm	15 Jun 1994	Stoulton Brook	80956

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where stone loach were found

Each point marks a survey location with at least one stone loach 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 stone loach
Deerfold Wood	7 Jun 2013	7 Jun 2013	1
Stoulton Brook	20 Feb 1992	17 May 2005	4

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

1992–2013

Survey records by year

Each bar shows how many survey visits recorded stone loach that year.

192

093

194

095

096

097

098

199

000

001

002

003

004

105

006

007

008

009

010

011

012

113

Fish measured by surveyors

Measured length distribution

See how the 14 measured fish were spread across different length ranges.

Smallest: 4.5 cm
Lower quarter: 7.5 cm
Median: 8.5 cm
Upper quarter: 8.8 cm
Largest: 10 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

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 →