About This Fish

Broadbar Mackerel


The Broad-barred Mackerel (Scomberomorus semifasciatus) is a ray finned fish which is also known as Grey Mackerel, broad-banded mackerel, broad-barred king mackerel, tiger mackerel and Grey Spanish Mackerel. It belongs to Family Scombridae under Order Perciformes of Class Actinopterygii. It is found in the western Pacific from southern Papua New Guinea and northern Australia and from Shark Bay, Western Australia to southern New South Wales. The Broad-barred Mackerel is pelagic and oceanodromous species which is found more commonly around coastal headlands and rocky reefs.



Body is torpedo shaped and apparently naked with minute scales and without corselets. Mouth is large with strong uni-serial compressed cutting teeth. Juvenile has 12 to 20 broad vertical dark grey bands while in adult it is less distinct which breaks into spots. Back is bronze green which turns green blue as size increases while cheek and belly are silver white. Snout is dark slate grey with a patch of green above the eye. It has two dorsal fins which are separated by narrow interspace. First dorsal fin has 13-15 spines and second with 19-22 soft rays while anal fin bears 19-22 rays. Both second dorsal and anal fin are followed by 8-10 detached finlets. First dorsal fin is jet black while second dorsal fin is creamy color with yellow towards the front. Pectoral fin is dusky while anal fin and finlets are transparent white. Caudal fin is dusky or blackish and is creamy white at margins. Caudal fin is deeply lunate with three external caudal keels on each side. It is a pelagic predator which feeds on small fishes such as sardines and herrings. The Broad-barred Mackerel grows up to 120 cm in length and 10 kg in weight and can live up to 12 years.


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Location Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Northern Territory