Stone loach · Barbatula barbatula

Stone loach in the Louth Canal

Largest measured stone loach: 13.1 cm

The largest stone loach measured in Environment Agency surveys of the Louth Canal was 13.1 cm, recorded at Alvingham High Bridge on 6 September 1995.

Across 310 measured stone loach, the median measured length was 7.7 cm.

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

See stone loach records across England →

Most recent observation14 May 2018Alvingham High Bridge

Largest measured stone loach: 13.1 cm
Median length: 7.7 cm
Fish measured: 310
Survey locations: 3

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
13.1 cm	6 Sept 1995	Alvingham High Bridge	58043
12.7 cm	6 Sept 1995	Alvingham High Bridge	58043
12.4 cm	6 Sept 1995	Alvingham High Bridge	58043
12.3 cm	6 Sept 1995	Alvingham High Bridge	58043
12 cm	6 Sept 1995	Alvingham High Bridge	58043
11.8 cm	15 Jun 1999	Alvingham High Bridge	58057
11.7 cm	8 Sept 1992	Alvingham High Bridge	58030
11.6 cm	11 May 2010	Alvingham High Bridge	121701
11.6 cm	6 Sept 1995	Alvingham High Bridge	58043
11.6 cm	6 Sept 1995	Alvingham High Bridge	58043

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
Alvingham High Bridge	8 Sept 1992	14 May 2018	8
Austen Fen	9 Sept 1992	5 Sept 1995	2
Brian Halls Mill	17 Feb 1987	17 Feb 1987	1

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

1987–2018

Survey records by year

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

187

088

089

090

091

292

093

094

295

096

097

098

199

000

001

002

003

104

005

006

007

008

009

110

011

112

013

014

115

016

017

118

Fish measured by surveyors

Measured length distribution

See how the 310 measured fish were spread across different length ranges.

Smallest: 3.6 cm
Lower quarter: 6.8 cm
Median: 7.7 cm
Upper quarter: 9 cm
Largest: 13.1 cm

0–99 mm

262

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Louth Canal

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

Roach European eel 3-spined stickleback Gudgeon Perch Pike

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 →