RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Onny

Largest measured stone loach: 11.1 cm

The largest stone loach measured in Environment Agency surveys of the River Onny was 11.1 cm, recorded at Linley on 10 June 2014.

Across 90 measured stone loach, the median measured length was 7 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 Onny.

See stone loach records across England →

Most recent observation10 September 2025Craven Arms (DS Halford Weir)
Largest measured stone loach
11.1 cm
Median length
7 cm
Fish measured
90
Survey locations
20

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
11.1 cm10 Jun 2014Linley141462
10.9 cm10 Jun 2014Linley141462
10.6 cm17 Jun 2014Horderley141477
10 cm19 Jun 2014Bromfield141467
10 cm18 Jun 2014Park Farm141479
10 cm17 Jun 2014Horderley141477
9.5 cm18 Jun 2014Park Farm141479
9.5 cm10 Jun 2013Park Farm136315
9.4 cm10 Jun 2013Park Farm136315
9.2 cm10 Jun 2013Park Farm136315

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
Craven Arms (DS Halford Weir)4 Aug 202110 Sept 20255
Bromfield8 May 200329 Aug 20256
Park Farm8 May 200328 Aug 202513
Upstream Plowden Mill11 Aug 202120 Aug 20255
Horderley30 Jun 199320 Aug 20257
Linley Estate Downstream Brookshill Brook Confluence19 Aug 202519 Aug 20251
Cwnd House18 May 199328 Aug 20244
Wooton Farm - Riffle28 Sept 202328 Sept 20231
Bromfield - Riffle28 Sept 202328 Sept 20231
Upstream Plowden Mill - Riffle27 Sept 202327 Sept 20231
Park Farm - Riffle27 Sept 202327 Sept 20231
Myndmill Bridge - Riffle27 Sept 202327 Sept 20231
Horderley - Riffle27 Sept 202327 Sept 20231
Craven Arms (ds Halford Weir) - Riffle27 Sept 202327 Sept 20231
Plowden Upstream Weir26 Sept 202210 Aug 20232
Whitcot Farm19 May 199310 Aug 20213
Linley18 May 199310 Aug 20213
Bow House19 May 19934 Aug 20214
Plowden - Red carded19 May 199319 May 19931
Gatton18 May 199318 May 19931

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

1993–2025

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 90 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
6 cm
Median
7 cm
Upper quarter
8.1 cm
Largest
11.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Onny

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

Bullhead Minnow Brown / sea trout Atlantic salmon European eel Grayling

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 →