RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Swale

Largest measured stone loach: 8.9 cm

The largest stone loach measured in Environment Agency surveys of the River Swale was 8.9 cm, recorded at Maunby Demesne Upper Site on 2 July 2015.

Across 438 measured stone loach, the median measured length was 3.6 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.

See stone loach records across England →

Most recent observation27 July 2026Great Langton DS of midbar
Largest measured stone loach
8.9 cm
Median length
3.6 cm
Fish measured
438
Survey locations
27

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
8.9 cm2 Jul 2015Maunby Demesne Upper Site145342
8.6 cm17 Jul 2019Maunby Demesne Upper Site154834
8.6 cm17 Jul 2019Maunby Demesne Upper Site154834
8.6 cm17 Jul 2019Skipton-on-Swale154830
8.5 cm20 Jul 2017Maunby Demesne Upper Site150967
8.4 cm17 Jul 2019Skipton-on-Swale154830
8.3 cm17 Jul 2019Maunby Demesne Upper Site154834
8.3 cm17 Jul 2019Skipton-on-Swale154830
8.3 cm15 Jul 2019Myton Grange154824
8.3 cm20 Jul 2017Maunby Demesne Upper Site150967

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
Great Langton RH of midbar27 Jul 202627 Jul 20261
Great Langton DS of midbar27 Jul 202627 Jul 20261
Maunby - Fry Survey16 Sept 199713 Aug 202519
Skipton-on-Swale25 Jul 19967 Aug 202512
Maunby Demesne Upper Site11 Aug 200330 Jul 202515
Brafferton11 Sept 200030 Jul 202512
Myton Grange8 Sept 200424 Jul 20253
Morton-on-Swale15 Aug 20003 Aug 20105
Thornton Bridge - Fry Survey20 Sept 19841 Sept 20099
Brompton-on-Swale, Thornborough Farm9 Aug 20002 Aug 20075
Langton Bridge10 Aug 200031 Jul 20076
Leckby24 Jul 20022 Aug 20063
Catterick9 Aug 20059 Aug 20051
Ellerton8 Aug 20058 Aug 20051
Colburn (Broken Brae Caravan Park)8 Aug 20058 Aug 20051
Swalefields4 Aug 20054 Aug 20051
Kiplin26 Jul 20024 Aug 20052
Langton Grange3 Aug 20053 Aug 20051
Holme25 Jun 19961 Aug 20053
Danotty Hall1 Aug 20051 Aug 20051
Topcliffe Caravan Park23 Jul 200228 Jul 20052
Maunby Railway Bridge28 Jul 200528 Jul 20051
Richmond27 Jul 200527 Jul 20051
Far Fairholme25 Jul 200226 Jul 20052
Thornton Bridge20 Jul 200520 Jul 20051
Low Whitta8 Aug 20007 Jun 20052
Fawdington23 Jul 200223 Jul 20021

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

1984–2026

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 438 measured fish were spread across different length ranges.

Smallest
1.7 cm
Lower quarter
3 cm
Median
3.6 cm
Upper quarter
5.7 cm
Largest
8.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Swale

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

Minnow Chub Bullhead Dace Grayling Barbel

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 →