RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Swale tributaries

Largest measured stone loach: 11 cm

The largest stone loach measured in Environment Agency surveys of the River Swale tributaries was 11 cm, recorded at Gunnerside Gill at Gunnerside on 1 October 2018.

Across 50 measured stone loach, the median measured length was 6.2 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 Swale tributaries.

See stone loach records across England →

Most recent observation4 September 2024Gunnerside Gill at Gunnerside
Largest measured stone loach
11 cm
Median length
6.2 cm
Fish measured
50
Survey locations
5

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
11 cm1 Oct 2018Gunnerside Gill at Gunnerside153818
10.9 cm22 Sept 2014Gunnerside Gill at Gunnerside142943
10.9 cm14 Aug 2012Gunnerside Gill at Gunnerside133124
10.8 cm22 Sept 2014Gunnerside Gill at Gunnerside142943
10.7 cm1 Aug 2011Gunnerside Gill at Gunnerside128675
10.6 cm1 Aug 2011Gunnerside Gill at Gunnerside128675
10.1 cm14 Aug 2012Gunnerside Gill at Gunnerside133124
10 cm1 Oct 2018Gunnerside Gill at Gunnerside153818
9.8 cm22 Sept 2014Gunnerside Gill at Gunnerside142943
9.6 cm1 Oct 2018Gunnerside Gill at Gunnerside153818

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
Gunnerside Gill at Gunnerside23 Aug 20104 Sept 20247
Colburn Beck at Hipswell14 Jun 201028 Sept 20222
The Stell / Rawcar Beck Church Bridge24 Aug 201624 Aug 20161
Brough / Scotton Beck9 Aug 20169 Aug 20161
Oxnop Beck u/s A68424 Aug 200429 Aug 20062

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

2004–2024

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 50 measured fish were spread across different length ranges.

Smallest
2.9 cm
Lower quarter
3.6 cm
Median
6.3 cm
Upper quarter
9.3 cm
Largest
11 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Swale tributaries

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

Brown / sea trout Bullhead Minnow 3-spined stickleback 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 →