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Chows (Trachurus declivis) — Carangidae

Chows

Trachurus declivis
Family: Carangidae
LC · Least Concern

The Chows (Trachurus declivis) is a brackish-water fish of the family Carangidae that grows up to 64 cm.

Length
64 cm
Water
Brackish
Depth
27.0–460.0 m
Diet
Carnivore
Behaviour
Large groups
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
Temperate waters of Australia and New Zealand; continental shelf.
Edibility
Commonly eaten

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Description

The greenback horse mackerel is a jack (Carangidae) from the temperate waters of Australia and New Zealand. The species has a slender, streamlined, silvery body with a greenish back and a row of bony scutes along the lateral line. Adults live on the continental shelf, usually near the bottom, in midwater and sometimes at the surface. It lives in large schools and hunts small zooplankton, small crustaceans and small fishes. It is an important commercial fish. The species is harmless to humans.

Frequently asked questions

How do you recognise the Chows?

The Chows has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Greenish back and bony scutes along the lateral line; schooling commercial horse mackerel.

Where does the Chows live?

The Chows lives in brackish water and is mostly found around mixed bottom. Temperate waters of Australia and New Zealand; continental shelf.

How big does the Chows get?

The Chows grows to a maximum of about 64 cm. On average the species is around 42 cm.

Is the Chows dangerous to humans?

No, the Chows is harmless to humans. None required: this species is harmless to humans.

Is the Chows edible?

Yes, the Chows is commonly eaten.

More photos

Chows (Trachurus declivis) — Carangidae — 2
iNaturalist ((c) Ken Graham, some rights reserved (CC BY-NC))
Chows (Trachurus declivis) — Carangidae — 3
iNaturalist ((c) Nicolò Palumbo, some rights reserved (CC BY-NC))
Chows (Trachurus declivis) — Carangidae — 4
iNaturalist ((c) J. Martin Crossley, some rights reserved (CC BY-NC-SA))
Chows (Trachurus declivis) — Carangidae — 5
Wikimedia Commons — Peter Southwood (CC BY-SA 3.0)
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All data

Identification

English name
Chows verified
Scientific name
Trachurus declivis
Family
Carangidae
Other names
Common jack mackerel; Cowanyoung; Greenback horse mackerel; Greenback scad; Jack mackerel; Horse mackerel; Scad; Scaly mackerel verified

Appearance

Size class
Large verified
Max length (cm)
64.0 verified
Average length (cm)
42.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Mixed bottom sourced
Min depth (m)
27.0 verified
Max depth (m)
460.0 verified
Natural range
Temperate waters of Australia and New Zealand; continental shelf. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small zooplankton, small crustaceans and small fishes sourced
Social behaviour
Large groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
levensduur_max_jaar
25.0 verified
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Greenish back and bony scutes along the lateral line; schooling commercial horse mackerel. sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
None required: this species is harmless to humans. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Trachurus

More from the family Carangidae

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