Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic; oceanodromous (Ref. 51243); depth range 10 - 476 m (Ref. 39327), usually 10 - 100 m (Ref. 2700). Subtropical
Circumglobal: tropical to temperate seas.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 61.0 cm TL male/unsexed; (Ref. 2850); max. published weight: 3.2 kg (Ref. 40637)
Dorsal spines (total): 0; Dorsal soft rays (total): 13 - 16; Anal spines: 0; Anal soft rays: 11 - 13. Adults dark green, brownish grey, or blue above, white below; juveniles with about 9 bars on back, from eye to dorsal fin; dark spots on front and middle of belly and on side near pectoral base in specimens less than 33 cm (Ref. 4919).
Primarily an oceanic (Ref. 2850, 2683), pelagic species but may enter estuaries (Ref. 4919). Feeds on crustaceans and squids (Ref. 10001). Suspected responsible for fatal poisoning (Ref. 4919). Should not be eaten (Ref. 36731).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Schneider, W., 1990. FAO species identification sheets for fishery purposes. Field guide to the commercial marine resources of the Gulf of Guinea. Prepared and published with the support of the FAO Regional Office for Africa. Rome: FAO. 268 p. (Ref. 2683)
IUCN Red List Status (Ref. 130435)
Human uses
Fisheries: commercial; gamefish: yes
Tools
Special reports
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Internet sources
Estimates based on models
Preferred temperature (Ref.
123201): 14 - 28.9, mean 26.1 °C (based on 5858 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00616 - 0.02045), b=2.91 (2.76 - 3.06), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (Ref.
69278): 3.7 ±0.40 se; based on food items.
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).
Nutrients (Ref.
124155): Calcium = 41 [14, 94] mg/100g; Iron = 0.904 [0.498, 2.058] mg/100g; Protein = 18 [16, 20] %; Omega3 = 0.406 [0.186, 0.815] g/100g; Selenium = 44.2 [23.0, 98.9] μg/100g; VitaminA = 22 [8, 61] μg/100g; Zinc = 0.628 [0.430, 0.889] mg/100g (wet weight);