Yes. Crevalle jacks (Caranx hippos) are edible, but they are usually rated somewhere between good and mediocre table fare rather than a top food fish. Their flesh is often dark and oily, and larger fish can taste stronger or fishier; many anglers prefer smaller fish and remove the dark bloodline before cooking.
With prompt bleeding, icing, and simple preparations such as grilling, frying, or a strong marinade, crevalle jack can be enjoyable—and in parts of the Caribbean and Bahamas, jacks are commonly eaten. Always follow local seafood safety advisories where ciguatera or other risks are reported.
Source: Wikipedia — Crevalle jack