Also known as Bonito, Eye-of-the-Sea, Scad, Selar, Trevally, Yellowband Scad.
Found in large schools during the day over coastal areas, dispersing at night to forage for food.
They feed nocturnally on benthic crustaceans and invertebrates.
Length - 25cm
Depth - 35-500m
Widespread Pacific Ocean
Often used as bait to catch other fish!
Jacks are fast swimming fish that can roam over great distances. The larger fish hunt other fish and the smaller fish eat zooplankton. In turn they are hunted by large Tuna and Dolphins. Ref: https://www.fishbase.se/summary/Selar-boops