Allis shad · Alosa alosa

Allis shad in the River Main Tamar

Largest measured allis shad: 57 cm

The largest allis shad measured in Environment Agency surveys of the River Main Tamar was 57 cm, recorded at Gunnislake Weir Index River Fish Trap on 22 June 2011.

Across 21 measured allis shad, the median measured length was 49.7 cm.

Surveyors recorded weights for 21 allis shad. The median was 3 lb 6 oz (1.53 kg) and the largest recorded weight was 4 lb 14.7 oz (2.23 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 Tamar.

See allis shad records across England →

Most recent observation26 June 2018Gunnislake Weir Index River Fish Trap · 1 fish

Largest measured allis shad: 57 cm
Median length: 49.7 cm
Fish measured: 21
Survey locations: 1

Individual EA measurements

Largest measured allis shad

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
57 cm	22 Jun 2011	Gunnislake Weir Index River Fish Trap	158855
55.6 cm	4 Jul 2011	Gunnislake Weir Index River Fish Trap	158865
54.5 cm	9 May 2012	Gunnislake Weir Index River Fish Trap	159092
52.5 cm	22 Jun 2011	Gunnislake Weir Index River Fish Trap	158855
52.3 cm	14 Jun 2011	Gunnislake Weir Index River Fish Trap	158848
52 cm	14 Jun 2011	Gunnislake Weir Index River Fish Trap	158848
52 cm	14 Jun 2011	Gunnislake Weir Index River Fish Trap	158848
51.1 cm	14 Jun 2011	Gunnislake Weir Index River Fish Trap	158848
50.2 cm	14 Jun 2011	Gunnislake Weir Index River Fish Trap	158848
49.7 cm	22 Jun 2011	Gunnislake Weir Index River Fish Trap	158855

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

Explore the river

Where allis shad were found

Each point marks a survey location with at least one allis shad 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 allis shad
Gunnislake Weir Index River Fish Trap	14 Jun 2011	26 Jun 2018	9

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

2011–2018

Survey records by year

Each bar shows how many survey visits recorded allis shad that year.

511

112

113

014

015

016

017

218

Fish measured by surveyors

Measured length distribution

See how the 21 measured fish were spread across different length ranges.

Smallest: 42.1 cm
Lower quarter: 48.4 cm
Median: 49.7 cm
Upper quarter: 52 cm
Largest: 57 cm

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 21 allis shad. This is a subset of the measured fish and may not represent the whole population.

Lightest: 1 lb 11.5 oz (0.78 kg)
Lower quarter: 2 lb 7.5 oz (1.12 kg)
Median: 3 lb 6 oz (1.53 kg)
Upper quarter: 3 lb 11.3 oz (1.68 kg)
Heaviest: 4 lb 14.7 oz (2.23 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 Tamar

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

Bullhead Stone loach Atlantic salmon Brown / sea trout Minnow European eel

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 →