Jack Mackerel - Trachurus australasicus

Jack Mackerel (Trachurus australasicus)
Name: Jack Mackerel - Trachurus Novaezelandiae
Family: Carangidae (Jacks and pompanos)
Order: Perciformes (perch-likes)
Class: Actinopterygii (ray-finned fishes)
Alternative Name: Jack Mackerel
Max size: 64.0 cm SL (male/unsexed; Ref. 33839); max. reported age: 25 years
Environment: Benthopelagic; brackish; marine ; depth range - 460 m
Climate: Temperate; 16.0°C; 25°S - 44°S
Importance: Highly commercial
Game fish: Yes
Resilience: Medium, minimum population doubling time 1.4 - 4.4 years (tm=2-4; tmax=25)
Distribution: Southwest Pacific: Western Australia to New South Wales , including New Zealand . Principal component analysis of morphometric and meristic characters indicates three separate subpopulations in the Great Australian Bight , off New South Wales , and off Tasmania (Ref. 7456).
Diagnosis: Dorsal spines (total): 9-9; Dorsal soft rays (total): 29-35; Anal spines: 3-3; Anal soft rays: 24-29; Vertebrae: 24-24. Adults are elongate and slightly compressed, and have a primary lateral line with 71-89 scutes, and a secondary lateral line reaching to below dorsal-fin rays 7-9 (Ref. 33616).
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