Stone loach · Barbatula barbatula

Stone loach in the River Medlock

Largest measured stone loach: 12.9 cm

The largest stone loach measured in Environment Agency surveys of the River Medlock was 12.9 cm, recorded at Mdme15 on 24 June 2002.

Across 396 measured stone loach, the median measured length was 9 cm.

Surveyors recorded one individual weight: 0.9 oz (0.025 kg).

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

See stone loach records across England →

Most recent observation1 June 2023Mdme31

Largest measured stone loach: 12.9 cm
Median length: 9 cm
Fish measured: 396
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	24 Jun 2002	Mdme15	60642
12.7 cm	17 Jun 2003	Mdme20	76165
12.4 cm	16 Jun 2003	Mdme15	76164
12.3 cm	16 Jun 2003	Mdme10	76162
12.2 cm	16 Jun 2003	Mdme15	76164
12.2 cm	16 Jun 2003	Mdme15	76164
12.2 cm	16 Jun 2003	Mdme10	76162
12.1 cm	16 Jun 2003	Mdme15	76164
12.1 cm	25 Sept 2002	Mdme20	62062
12 cm	27 May 2004	Mdme25	81357

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
Mdme31	1 Jun 2023	1 Jun 2023	1
Mdme26	31 May 2023	31 May 2023	1
Mdme15	2 Oct 1995	30 May 2023	10
Mdme05	21 Aug 2001	9 Oct 2018	9
Mdme20	25 Sept 2002	24 May 2013	7
Mdme25.5	18 Apr 2013	18 Apr 2013	1
Mdme22.5	18 Apr 2013	18 Apr 2013	1
Mdme25	25 Sept 2002	25 Apr 2006	5
Mdme10	10 Aug 2001	24 Apr 2006	6
Mdme17.5	21 Aug 2001	19 Jun 2002	2

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

1995–2023

Survey records by year

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

195

096

197

098

099

000

401

602

503

504

505

506

007

008

009

010

011

112

513

114

015

016

017

118

019

020

021

022

323

Fish measured by surveyors

Measured length distribution

See how the 396 measured fish were spread across different length ranges.

Smallest: 4.7 cm
Lower quarter: 7 cm
Median: 9 cm
Upper quarter: 10.7 cm
Largest: 12.9 cm

0–99 mm

236

100–199 mm

160

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

One individual weight was recorded for this fish and river. This is a subset of the measured fish and may not represent the whole population.

Recorded weight: 0.9 oz (0.025 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Medlock

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

Brown / sea trout Minnow 3-spined stickleback Chub Perch Roach

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 →