Grey Mackerel

Scomberomorus semifasciatus is a species of fish in the family Scombridae found in tropical waters of the western Pacific, along the northern coast of Australia and the southern coast of Papua New Guinea, from Shark Bay, Western Australia to northern New South Wales.

Description

It has a sleek, torpedo-shaped body perfectly adapted for fast swimming. Adult individuals can reach lengths of 120–150 cm and weigh up to 25 kg, although specimens around 70–100 cm are more commonly encountered.

The body is silvery-white with characteristic dark vertical spots or bars along the sides that stand out against its shiny scales. The head is pointed, with a large mouth filled with sharp teeth, perfectly suited for catching prey. The fins are dark, with yellowish or grayish tones, emphasizing its predatory appearance.

Habitat

It prefers warm coastal waters and is found along the northern coasts of Australia and Papua New Guinea at depths ranging from 10 to 100 meters, including coral reefs, lagoons, and sandy seabeds.

It often travels in schools, especially during migration periods.

It is an active predator, feeding primarily on small to medium-sized fish (such as sardines and anchovies) and Cephalopods, including squid.