Rainbow trout · Oncorhynchus mykiss

Rainbow trout in the River Test

Largest measured rainbow trout: 71 cm

The largest rainbow trout measured in Environment Agency surveys of the River Test was 71 cm, recorded at Longparish, Southside Farm on 8 July 2004.

Across 11 measured rainbow trout, the median measured length was 60 cm.

Surveyors recorded weights for 2 rainbow trout. The median was 1 lb 10.2 oz (0.744 kg) and the largest recorded weight was 2 lb 10.5 oz (1.2 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 rainbow trout records across England →

Most recent observation19 July 2018Romsey War Memorial Park · 1 fish

Largest measured rainbow trout: 71 cm
Median length: 60 cm
Fish measured: 11
Survey locations: 4

Individual EA measurements

Largest measured rainbow trout

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
71 cm	8 Jul 2004	Longparish, Southside Farm	80388
68.2 cm	8 Jul 2004	Longparish, Southside Farm	80388
64.8 cm	8 Jul 2004	Longparish, Southside Farm	80388
61.2 cm	8 Jul 2004	Longparish, Southside Farm	80388
61 cm	8 Jul 2004	Longparish, Southside Farm	80388
60 cm	8 Jul 2004	Longparish, Southside Farm	80388
48.6 cm	8 Jul 2004	Longparish, Southside Farm	80388
45.6 cm	15 Jul 2004	Kimbridge main	80518
45.3 cm	8 Jul 2004	Longparish, Southside Farm	80388
29.6 cm	14 Jul 2004	Stockbridge, Marsh Court	80530

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where rainbow trout were found

Each point marks a survey location with at least one rainbow trout 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 surveyed	First recorded	Last recorded	Visits finding rainbow trout
Romsey War Memorial Park	19 Jul 2018	19 Jul 2018	1
Kimbridge main	15 Jul 2004	15 Jul 2004	1
Stockbridge, Marsh Court	14 Jul 2004	14 Jul 2004	1
Longparish, Southside Farm	8 Jul 2004	8 Jul 2004	1

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

2004–2018

Survey records by year

Each bar shows how many survey visits recorded rainbow trout that year.

304

005

006

007

008

009

010

011

012

013

014

015

016

017

118

Fish measured by surveyors

Measured length distribution

See how the 11 measured fish were spread across different length ranges.

Smallest: 8.6 cm
Lower quarter: 45.5 cm
Median: 60 cm
Upper quarter: 63 cm
Largest: 71 cm

0–99 mm

200–299 mm

400–499 mm

600–699 mm

700–799 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 2 rainbow trout. This is a subset of the measured fish and may not represent the whole population.

Lightest: 10 oz (0.284 kg)
Lower quarter: 1 lb 2.1 oz (0.514 kg)
Median: 1 lb 10.2 oz (0.744 kg)
Upper quarter: 2 lb 2.4 oz (0.974 kg)
Heaviest: 2 lb 10.5 oz (1.2 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 Stone loach 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 →