RiverFish

Stone loach · Barbatula barbatula

Stone loach in the Scarrow Beck

Largest measured stone loach: 14.5 cm

The largest stone loach measured in Environment Agency surveys of the Scarrow Beck was 14.5 cm, recorded at Downstream Calthorpe Bridge on 29 April 1994.

Across 538 measured stone loach, the median measured length was 9 cm.

Surveyors recorded one individual weight: 0.4 oz (0.011 kg).

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Scarrow Beck.

See stone loach records across England →

Most recent observation30 March 2026Scarrow Beck Farm · 5 fish
Largest measured stone loach
14.5 cm
Median length
9 cm
Fish measured
538
Survey locations
15

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
14.5 cm29 Apr 1994Downstream Calthorpe Bridge16790
14 cm9 Feb 2010Hanworth North bridge121174
13.8 cm25 Mar 2022Scarrow Beck Farm160920
13.5 cm29 May 1998Upstream Calthorpe Ford16793
13.4 cm10 Jun 1998Downstream Calthorpe Bridge16792
13.3 cm25 Mar 2022Scarrow Beck Farm160920
12.8 cm21 Nov 2002Aldborough Mill footbridge73432
12.6 cm15 Nov 2002Alby School Bridge73431
12.5 cm9 Dec 2002Aldborough Surgery bridge73435
12.5 cm1 Nov 1996Alby School Bridge73246

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
Scarrow Beck Farm29 Mar 201930 Mar 20264
Hanworth North bridge27 Nov 200229 Mar 20193
Thurgarton19 Nov 200218 Feb 20102
Metton Bridge20 Nov 20029 Feb 20102
Aldborough Surgery bridge1 Nov 19969 Dec 20022
Sustead25 Nov 199621 Nov 20022
Aldborough Mill footbridge21 Nov 200221 Nov 20021
Gresham Southeast20 Nov 200220 Nov 20021
Gresham STW20 Nov 200220 Nov 20021
Thurgarton Hall25 Nov 199619 Nov 20022
Aldborough STW18 Nov 200218 Nov 20021
Alby School Bridge1 Nov 199615 Nov 20022
Gillhams Carr bridge14 Nov 200214 Nov 20021
Downstream Calthorpe Bridge15 Jul 198810 Jun 19984
Upstream Calthorpe Ford18 Jul 198829 May 19984

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

1988–2026

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 538 measured fish were spread across different length ranges.

Smallest
3.9 cm
Lower quarter
7 cm
Median
9 cm
Upper quarter
10.2 cm
Largest
14.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

One individual weight was recorded for this fish and river. This is a subset of the measured fish and may not represent the whole population.

Recorded weight
0.4 oz (0.011 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Scarrow Beck

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

3-spined stickleback Brown / sea trout Perch

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 →