Skipjack tuna
Katsuwonus pelamis
Katsuwonus pelamis, commonly known as skipjack tuna, is a fast-swimming pelagic fish that typically grows to about 40–80 cm in length.
Video
About this species
Species identity
Katsuwonus pelamis, commonly known as skipjack tuna, is a fast-swimming pelagic fish that typically grows to about 40–80 cm in length. It lives in the upper layers of the open ocean, often forming large, highly mobile schools. Its streamlined body and distinctive dark horizontal stripes are adapted for continuous swimming in warm waters.
Where it lives
Katsuwonus pelamis is found in tropical and subtropical waters of the Atlantic, Pacific, and Indian Oceans. It is one of the most widely distributed tuna species and is common in warm surface waters across the global ocean.
It mainly inhabits the upper ocean, especially in regions influenced by currents, fronts, and areas of high productivity.
This species often aggregates in areas where prey is concentrated, such as near oceanic fronts or floating objects.
Role in the ecosystem
Skipjack tuna helps explain how marine food webs function through its ecological role, habitat use, and connection to broader ecosystem change.
Scientific reference
Citation
Ocean Literacy Connections
This resource can be explored through Ocean biodiversity and One ocean, many features.
- How do ocean habitats support so many forms of life and interaction?
- How do different ocean places belong to one connected system?
Explore and connect
Open the species distribution layer to compare this range with ocean basins, ecosystems, and related marine context.



