RiverFish

Rainbow trout · Oncorhynchus mykiss

Rainbow trout in the River Main Somerset Frome

Largest measured rainbow trout: 37.1 cm

The largest rainbow trout measured in Environment Agency surveys of the River Main Somerset Frome was 37.1 cm, recorded at Tellisford (Te06) on 22 September 2025.

Across 42 measured rainbow trout, the median measured length was 31.2 cm.

Surveyors recorded one individual weight: 13.4 oz (0.381 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 Main Somerset Frome.

See rainbow trout records across England →

Most recent observation22 September 2025Tellisford (Te06) · 1 fish
Largest measured rainbow trout
37.1 cm
Median length
31.2 cm
Fish measured
42
Survey locations
2

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.

LengthSurvey dateSurvey locationSurvey ID
37.1 cm22 Sept 2025Tellisford (Te06)178912
36.5 cm29 Aug 2019Tellisford (Te06)155204
36.2 cm29 Aug 2019Tellisford (Te06)155204
35.5 cm25 Oct 2007Snarlton Farm (Te)107860
34.8 cm29 Aug 2019Tellisford (Te06)155204
34.1 cm29 Aug 2019Tellisford (Te06)155204
34 cm29 Aug 2019Tellisford (Te06)155204
33.5 cm29 Aug 2019Tellisford (Te06)155204
33.5 cm29 Aug 2019Tellisford (Te06)155204
33.2 cm29 Aug 2019Tellisford (Te06)155204

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 surveyedFirst recordedLast recordedVisits finding rainbow trout
Tellisford (Te06)3 Oct 200122 Sept 20256
Snarlton Farm (Te)25 Oct 200725 Oct 20071

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

2001–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 42 measured fish were spread across different length ranges.

Smallest
22.8 cm
Lower quarter
29.7 cm
Median
31.2 cm
Upper quarter
33.2 cm
Largest
37.1 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
13.4 oz (0.381 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 Main Somerset Frome

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

Minnow Stone loach Roach Bullhead 3-spined stickleback Chub

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 →