Jacks, scads, trevallies, queenfishes, runners, amberjacks, pilotfishes, pampanos and etc are the members of the Carangidae family. The family members are made up of many highly variable body shape fish species. The carangids are distinguished from all other similar families in having the first 2 anal fin spines detached from rest of fin. These spines are sometimes partially or completely embedded in large adults of several genera, especially Seriola, Alectis, and Caranx and can only be found by dissection. Most species have spiny scutes along lateral line.
The carangids are marine fishes found in the Atlantic, Indian and Pacific oceans. Their habitats and behaviour are highly variable. Most of them are schooling species. Most species are fast swimming predators that hunt at or near the surface, mostly in oceanic waters, and often far offshore. Some root in sand for invertebrates and fishes.
There are altogether 30 genera and 147 species in the Carangidae family worldwide. There are 19 genera and about 61 species found in Malaysia.
The family has four subfamilies, Caranginae consist of a mixtures of 20 genera and 104 species like the pompanos, trevallies, scads, horse mackerel, moonfish, lookdown and etc. Naucratinae consist of 5 genera and 13 species also with many mixtures. Trachinotinae consist of 2 genera and 21 species of mostly pompanos. Scomberoidinae consist of 3 genera and 10 species of queenfishes (leatherjacket).
This page shows the species commonly called scads and runners.