RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Test

Largest measured stone loach: 9.3 cm

The largest stone loach measured in Environment Agency surveys of the River Test was 9.3 cm, recorded at Longstock Mill on 26 August 2010.

Across 43 measured stone loach, the median measured length was 7.3 cm.

Surveyors recorded weights for 8 stone loach. The median was 0.2 oz (0.0055 kg) and the largest recorded weight was 0.3 oz (0.008 kg).

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

See stone loach records across England →

Most recent observation9 October 2025Kimbridge House · 1 fish
Largest measured stone loach
9.3 cm
Median length
7.3 cm
Fish measured
43
Survey locations
52

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
9.3 cm26 Aug 2010Longstock Mill123878
9.2 cm19 Aug 2010Mottisfont, Oakley Farm123827
8.5 cm26 Aug 2010Longstock Mill123878
8.5 cm4 Sept 2006Romsey War Memorial Park101358
8.3 cm20 Sept 2006Compton Carrier101774
8.2 cm19 Aug 2010Mottisfont, Oakley Farm123827
8.2 cm11 Aug 2010Moorcourt Carrier123807
8.2 cm20 Sept 2006Compton Carrier101774
8.1 cm11 Aug 2010Moorcourt Carrier123807
8 cm26 Aug 2010Longstock Mill123878

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
Kimbridge House29 Sept 20209 Oct 20256
Freelands House, Wherwell17 Sept 20107 Oct 20256
Big Berm, Freelands7 Oct 20257 Oct 20251
Fullerton Old Beat25 Sept 202325 Sept 20252
Compton Islands17 Sept 202425 Sept 20252
Compton16 Jul 200425 Sept 20259
Grayling Island23 Aug 201616 Sept 20258
Mottisfont Bittern Shallow19 Sept 202415 Sept 20252
Linhay Meads Island Meadow13 Sept 202415 Sept 20252
Linhay Meads Fishermans Meadow13 Sept 202415 Sept 20252
Kimbridge Mill Cottage16 Sept 201015 Sept 20257
Moorcourt Main23 Jul 201812 Sept 20253
Machine Shallows13 Sept 202312 Sept 20253
Longstock Mill16 Sept 200812 Sept 202511
Meadowview23 Sept 202011 Sept 20256
Mainstone Farm26 Sept 201911 Sept 20256
Longbridge12 Aug 201011 Sept 20258
Burnt Mill7 Sept 201011 Sept 20258
Bossington House beat18 Sept 201910 Sept 20256
Mayfly21 Sept 20169 Sept 20258
Bunnies26 Aug 20109 Sept 20259
Romsey Canal28 Aug 20048 Sept 202511
Compton Carrier13 Sept 20029 Jul 202513
Mottisfont, Oakley Farm19 Aug 201019 Sept 20249
Broadwater Point16 Sept 202416 Sept 20241
Horsebridge17 Sept 200913 Sept 20248
Sheepbridge6 Sept 201612 Sept 20245
Greatbridge Railway21 Sept 202011 Sept 20245
Pittleworth24 Jul 202019 Sept 20235
Nut Walk, Pittleworth24 Jul 202019 Sept 20234
Romsey War Memorial Park14 Nov 200328 Jul 20236
Moorcourt Carrier25 Aug 20049 Sept 20227
Upper Houghton28 Sept 202016 Sept 20212
Upstream M2713 Aug 200923 Sept 20207
Kimbridge House 34 Sept 20184 Sept 20181
Timsbury Mayfly carrier7 Sept 201021 Sept 20162
Kimbridge: Wallace's Leat confluence16 Sept 201020 Sept 20162
Kimbridge, New stream16 Sept 201020 Sept 20162
Stockbridge, Marsh Court14 Jul 20046 Sept 20163
Timsbury Mayfly carrier u/s of bridge8 Jul 20148 Jul 20141
Fairbourne stream, Brook Farm1 Sept 20118 Jul 20142
Romsey Canal Railway Bridge18 Apr 201317 Apr 20142
Red River Carrier, Broadlands14 Jun 201314 Jun 20131
Wherwell Upper17 Jul 201217 Jul 20121
Dublin Farm17 Jul 201217 Jul 20121
Chilbolton Common12 Jul 201212 Jul 20121
Timsbury carrier restoration site18 Oct 201118 Oct 20111
Longparish, Southside Carrier16 Sept 201016 Sept 20101
Mottisfont Abbey, Oakley carrier19 Aug 201019 Aug 20101
House Beat2 Sept 20042 Sept 20041
North Head14 Jul 200414 Jul 20041
Dairybridge7 Jul 20047 Jul 20041

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

2002–2025

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 43 measured fish were spread across different length ranges.

Smallest
3.5 cm
Lower quarter
6.7 cm
Median
7.3 cm
Upper quarter
8 cm
Largest
9.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 8 stone loach. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.1 oz (0.002 kg)
Lower quarter
0.1 oz (0.003 kg)
Median
0.2 oz (0.0055 kg)
Upper quarter
0.3 oz (0.0072 kg)
Heaviest
0.3 oz (0.008 kg)

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

More fish in this river

Explore the River Test

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

Brown / sea trout European eel Bullhead Minnow Grayling Atlantic salmon

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 →