South Shore of Oahu out of Kewalo Basin and Ala Wai — charter boats run for ahi, mahi mahi, ono and the occasional blue marlin on the offshore ledge, with whipping for papio off the rocks at dawn.
Part of the Hawaiian Islands region.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bonefish (O'io) | ||||||||||||
| Ulua (Giant Trevally) | ||||||||||||
| Bluefin Trevally (Omilu) | ||||||||||||
| Papio (Juvenile Trevally) | ||||||||||||
| Kawakawa |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ulua (Giant Trevally) | ||||||||||||
| Bluefin Trevally (Omilu) | ||||||||||||
| Aku (Skipjack Tuna) | ||||||||||||
| Mahi-Mahi | ||||||||||||
| Kawakawa | ||||||||||||
| Ono (Wahoo) |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pacific Blue Marlin | ||||||||||||
| Ahi (Yellowfin Tuna) | ||||||||||||
| Bigeye Tuna | ||||||||||||
| Ono (Wahoo) | ||||||||||||
| Mahi-Mahi | ||||||||||||
| Aku (Skipjack Tuna) |
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Tell it apart: The conical snout overhanging a small under-slung mouth, combined with bright chrome flanks and a deeply forked tail, is unmistakable - no other Hawaiian gamefish has that pointed nose set over an inferior mouth.

Tell it apart: Steep blunt forehead, large size, and a plain silver-to-grey body with no blue fins and no spots separate it from the spotted, blue-finned Omilu.
Easily confused with: Bluefin Trevally (Omilu), Papio (Juvenile Trevally)

Tell it apart: Bright blue fins plus fine black-and-blue speckling across the back instantly mark Omilu, versus the plain grey, steep-headed Ulua.
Easily confused with: Ulua (Giant Trevally), Papio (Juvenile Trevally)

Tell it apart: Papio is simply a young trevally - confirm the bony scutes on the rear lateral line, then check for blue fins and spots (Omilu) or a plain steep-headed grey body (Ulua) to pin the species.
Easily confused with: Ulua (Giant Trevally), Bluefin Trevally (Omilu)

Tell it apart: Broken wavy markings confined to the UPPER back, plus a few dark spots low between the pectoral and pelvic fins, distinguish Kawakawa from Aku, which has clean horizontal stripes on the LOWER belly and a plain back.
Easily confused with: Aku (Skipjack Tuna)

Tell it apart: Straight horizontal stripes running along the belly and a plain unmarked back separate Aku from Kawakawa, whose markings are wavy, confined to the upper back, with spots low on the chest.
Easily confused with: Kawakawa

Tell it apart: The single full-length dorsal fin running head to tail over a thin, deep, glowing green-gold body is unique - no other Hawaiian pelagic has that continuous dorsal.

Tell it apart: An elongated tubular body with vertical blue tiger bars and a toothed beak-like jaw identifies Ono - it has no rigid spear/bill, unlike a marlin.
Easily confused with: Pacific Blue Marlin

Tell it apart: The rigid round spear bill and a pointed dorsal fin shorter than the body depth confirm a marlin; Ono has a toothed beak and a long low body, never a bill.
Easily confused with: Ono (Wahoo)

Tell it apart: Very long curved yellow second dorsal/anal fins, a bright yellow side stripe, and a normal-sized eye separate Yellowfin from Bigeye, which keeps short fins, a larger eye, and a longer pectoral.
Easily confused with: Bigeye Tuna

Tell it apart: Short second dorsal/anal fins, a noticeably larger eye, and a long pectoral fin reaching past the second dorsal origin mark Bigeye, versus the long sweeping yellow fins and yellow side stripe of Yellowfin (Ahi).
Easily confused with: Ahi (Yellowfin Tuna)
Hawaiian tides are small (~2 ft range) — what matters most is moon phase, which drives stronger tidal flow and pushes bonefish onto flats and trevally tight to structure; plan offshore trips to beat the trade winds, which typically build to 15–20 kt by midday.
Hanalei, HI · Hilo, HI · Kailua-Kona, HI · Kihei, HI · Lahaina, HI · Princeville, HI · Waianae, HI