Name usage
The term "jack" may refer to multiple species of fish rather than a single taxonomic species.
Jackfish
Jack is a common name applied to multiple fish species.
Jack
Last Updated Mar 9, 2026 · 2 sources
Species Guide
What to know about jackfish
A clean field guide focused on habitat, identification, behavior, and conservation context without burying the useful parts.
This entry covers fishes commonly called "jack" or "jackfish."
The strongest linked planning options currently surface around destinations such as Caye Caulker, Grenada (St. George's and Grand Anse), San Pedro (Ambergris Caye), Belize and countries such as French Polynesia, Japan, Maldives for divers building trips around jackfish.
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Responsible Encounters
How to dive with jackfish
Conservation-minded guidance for divers who want the encounter without adding pressure.
Give jackfish space, avoid blocking the animal's path, and follow local site and operator rules for wildlife interactions with saltwater fishes.
Field Notes
Interesting things worth knowing
Useful species context that makes the encounter more meaningful once you are underwater.
Field notes
Top Destinations
