Stone loach · Barbatula barbatula

Stone loach in the River Irwell

Largest measured stone loach: 12.9 cm

The largest stone loach measured in Environment Agency surveys of the River Irwell was 12.9 cm, recorded at Iwir06 on 9 July 2003.

Across 356 measured stone loach, the median measured length was 9.1 cm.

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

See stone loach records across England →

Most recent observation3 August 2015Iwir08 · 100 fish

Largest measured stone loach: 12.9 cm
Median length: 9.1 cm
Fish measured: 356
Survey locations: 10

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
12.9 cm	9 Jul 2003	Iwir06	76340
12.6 cm	9 Jul 2003	Iwir08	76342
12.4 cm	9 Jul 2003	Iwir08	76342
12.4 cm	9 Jul 2003	Iwir08	76342
12.4 cm	9 Jul 2003	Iwir06	76340
12.3 cm	9 Jul 2003	Iwir08	76342
12.3 cm	8 Jul 2003	Iwir10	76336
12.1 cm	9 Jul 2003	Iwir08	76342
12 cm	9 Jul 2003	Iwir08	76342
12 cm	9 Jul 2003	Iwir08	76342

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
Iwir08	9 Jul 2003	3 Aug 2015	2
Iwir07	29 Jun 2004	3 Aug 2015	2
Iwir05.5	1 Jan 1997	13 Jul 2011	2
Iwir10	8 Jul 2003	26 Sept 2008	5
Iwir25	7 Jun 2005	6 Jun 2006	2
Iwir20	7 Jul 2003	6 Jun 2006	4
Iwir15	8 Jul 2003	5 Jun 2006	4
Iwir09	29 Jun 2004	29 Jun 2004	1
Iwir06	6 Jan 1997	9 Jul 2003	2
Ir07	6 Jan 1997	6 Jan 1997	1

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

1997–2015

Survey records by year

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

397

098

099

000

001

002

503

504

405

406

007

108

009

010

111

012

013

014

215

Fish measured by surveyors

Measured length distribution

See how the 356 measured fish were spread across different length ranges.

Smallest: 1.6 cm
Lower quarter: 7.6 cm
Median: 9.1 cm
Upper quarter: 10.3 cm
Largest: 12.9 cm

0–99 mm

243

100–199 mm

113

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Irwell

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

Brown / sea trout Bullhead Minnow 3-spined stickleback Gudgeon Chub

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 →