RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Derwent (Yorkshire)

Largest measured stone loach: 12.2 cm

The largest stone loach measured in Environment Agency surveys of the River Derwent (Yorkshire) was 12.2 cm, recorded at Downstream Weir Head DERBT3 on 23 August 2013.

Across 133 measured stone loach, the median measured length was 4.2 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 Derwent (Yorkshire).

See stone loach records across England →

Most recent observation3 September 2024Downstream Forge Valley gauging weir. DERBT5.
Largest measured stone loach
12.2 cm
Median length
4.2 cm
Fish measured
133
Survey locations
19

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
12.2 cm23 Aug 2013Downstream Weir Head DERBT3138494
11.5 cm17 Aug 2022Downstream Forge Valley gauging weir. DERBT5.161455
11.5 cm23 Aug 2013Downstream Weir Head DERBT3138494
10.6 cm23 Aug 2013Downstream Forge Valley gauging weir. DERBT5.138500
10.6 cm23 Aug 2013Downstream Weir Head DERBT3138494
10.3 cm17 Aug 2022Downstream Forge Valley gauging weir. DERBT5.161455
10.3 cm23 Aug 2013Downstream Weir Head DERBT3138494
10 cm24 Aug 2021Downstream Weir Head DERBT3160138
10 cm14 Aug 2019Downstream West Ayton DERBT6155174
9.9 cm17 Aug 2022Downstream Forge Valley gauging weir. DERBT5.161455

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
Downstream Forge Valley gauging weir. DERBT5.24 Sept 20013 Sept 202410
Downstream Weir Head DERBT324 Sept 200124 Aug 202113
Downstream West Ayton DERBT624 Sept 200114 Aug 20194
Stamford Bridge DERCORS106 Sept 200016 Jul 201812
Kirkham Abbey DERCORS77 Sept 200116 Jul 201811
Buttercrambe DERCORS914 Sept 200128 Jun 20189
Bubwith - Fry Survey18 Sept 198414 Aug 201717
Yedingham - Fry Survey23 Sept 198520 Aug 201511
Malton DERCORS55 Sept 200114 Jul 201510
Downstream Wrench Green Bridge.DERBT225 Jun 200213 Sept 20122
Sutton Upon Derwent DERCORS189 Sept 200226 Jul 20127
Yedingham DERCORS49 Aug 201023 Jul 20122
Howsham DERCORS812 Sept 200114 Sept 20076
Wheldrake Ings DERCORS1917 Sept 200112 Sept 20076
Upstream Wrench Green Bridge25 Jun 200221 Jun 20062
Langdale end bridge20 Jun 200620 Jun 20061
Low Hutton DERCORS67 Sept 200121 Sept 20054
Breighton DERCORS208 Sept 200010 Sept 20033
Barmby on the Marsh DERCORS2116 Sept 200216 Sept 20021

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

1984–2024

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 133 measured fish were spread across different length ranges.

Smallest
1.2 cm
Lower quarter
2.8 cm
Median
4.2 cm
Upper quarter
7.6 cm
Largest
12.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Derwent (Yorkshire)

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

Minnow Bullhead Dace European eel 3-spined stickleback 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 →