Overview
The dorsal fin has 13 15 spines and is high anteriorly. This distinguishes it from the bonito, Sarda, which have a relatively long and low first dorsal fin. The anal fin, which has 11 13 rays is similar to the second dorsal fin in size and shape. The body lacks scales, except on the anterior corselet and along the lateral line. This is the only species of Euthynnus with 37, instead of the usual 39, vertebrae. Each jaw has 20 40 small, conical teeth. Bonitos have fewer and larger conical teeth. Mackerels have flat, triangular teeth.
Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Pleuronectiformes
- Family
- Scombridae
- Genus
- Euthynnus
- Species
- lineatus
Habitat
Black skipjack tuna primarily inhabit the open pelagic waters of the eastern Pacific Ocean, from California to Peru, often in warm tropical and subtropical seas. They prefer areas near the surface, such as over continental shelves and around islands, where they can find abundant prey. These fish are highly migratory, following currents and food sources across vast oceanic regions.
Diet
Small Surface Fishes, Squids, and Crustaceans.
Behavior
Black skipjack form large, fast-moving schools for protection and feeding, which helps them evade predators and coordinate hunts. They are diurnal and highly active swimmers, often leaping out of the water during pursuits. These fish exhibit migratory behavior, traveling long distances in response to seasonal changes in water temperature and food availability, and they are known for their agility in evading hooks.
Fishing
It can be hooked by trolling or casting small whole baits or strip baits, or small lures such as spoons, plugs, jigs, and feathers. It has been said that the black skipjack will strike any lure trolled at speeds up to 8 or 10 miles per hour (12 16 km). It is rated as a good food fish by some and disdained by others. Its flesh is dark red and the taste is strong.
Conservation Status
Listed as Least Concern by IUCN.