RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Main Wolf

Largest measured stone loach: 12.1 cm

The largest stone loach measured in Environment Agency surveys of the River Main Wolf was 12.1 cm, recorded at Germansweek on 4 August 2008.

Across 743 measured stone loach, the median measured length was 7.4 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 Main Wolf.

See stone loach records across England →

Most recent observation16 September 2025Wolf Confluence · 22 fish
Largest measured stone loach
12.1 cm
Median length
7.4 cm
Fish measured
743
Survey locations
13

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.

LengthSurvey dateSurvey locationSurvey ID
12.1 cm4 Aug 2008Germansweek112512
11.7 cm4 Aug 2011Rexon127489
11.3 cm5 Jul 2012Rexon132234
10.9 cm30 Jul 2013Germansweek137625
10.8 cm6 Aug 2015Rexon145801
10.8 cm4 Aug 2011Rexon127489
10.7 cm29 Aug 2019Rexon155584
10.7 cm11 Aug 2016Rexon148914
10.6 cm28 Sept 2018Rexon153941
10.5 cm30 Jun 2025Cookworthy Trap177285

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 surveyedFirst recordedLast recordedVisits finding stone loach
Wolf Confluence23 Jul 199216 Sept 202530
Rexon17 Jul 199216 Sept 202528
Cookworthy Trap12 Aug 199330 Jun 202526
d/s Roadford Dam8 Sept 200525 Aug 20153
Germansweek3 Aug 199929 Jul 20158
Lower Cookworthy Farm3 Aug 199314 Aug 200912
u/s Cookworthy Trap15 Jul 199220 Jun 200713
d/s Kellacott2 Aug 19931 Sept 200612
Broadwood27 Aug 199310 Aug 20004
d/s Slew Wood27 Aug 19938 Aug 20003
u/s Kellacott24 Jun 19961 Aug 19972
Steep Field12 Jun 199617 Jul 19972
Oxbow17 Jul 199717 Jul 19971

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

1992–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 743 measured fish were spread across different length ranges.

Smallest
2.2 cm
Lower quarter
6.2 cm
Median
7.4 cm
Upper quarter
8.2 cm
Largest
12.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Wolf

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

Brown / sea trout Bullhead Minnow European eel Atlantic salmon Brook lamprey

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 →