Saltwater · Late spring through fall; numbers surge north in warm and El Niño years

Pacific Bonito

Sarda chiliensis

A small, blisteringly fast tuna relative that raids Southern California bait schools in late summer. Its striped back can suggest a skipjack, but the plain white belly and prominent conical teeth mark it as a true bonito. The eastern Pacific form is the subspecies behind its Chinese name, and its range pulses far north in El Niño years.

Seasons · Peak

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Pacific Bonito — Photo: The U.S. Food and Drug Administration, Public domain — Wikimedia Commons

Identifying features

Dark horizontal stripes across the back only — the belly is plain white
Prominent, sharp conical teeth visible in the large mouth
Long torpedo body with rows of small finlets behind the dorsal and anal fins
No scales except a small patch (corselet) behind the head and pectoral fins
Steel-blue back fading to a silvery belly

Habits

Hunts in fast surface schools that slash through sardines and anchovies
Pushes north with warm water, reaching far up the coast in El Niño years
Feeds mainly on small schooling fish and squid
Spawns in summer, with eggs scattered in open water
A hard, drag-testing fight on light tackle despite modest size

Distribution

San Diego, CA · California★ Primary

San Francisco, CA · CaliforniaCommon

Where to find them

Kelp lines and offshore banks off San Diego and Los Angeles
Channel Islands bait grounds in late summer
Central California surface schools in warm years

Where they live

Surface water over offshore banks and kelp linesIsland lee sides and current edges in the Southern California BightBait schools around piers and harbour mouths in warm years

How to catch them

Trolling feathers and casting to surface schools Boat

Rig: Medium spinning or conventional outfit; troll small feathers until a school is found, then cast spoons or jigs into the breaking fish

Bait/lure: Trolling feathers, chrome spoons and metal jigs

Key tip: Cast ahead of a moving school and wind fast — bonito key on speed and ignore a slow lure.

Fly and light tackle around kelp and banks Shore

Rig: 8-10 wt fly outfit or light spinning rod with small baitfish flies and jigs, worked around kelp lines and offshore banks in warm years

Bait/lure: Baitfish-pattern flies, small jigs, live anchovies as chum

Key tip: Keep a few live baits trickling over the side to hold the school near the boat.

Best baits & lures

Small trolling feathersShiny casting spoons and metal jigsLive sardines and anchovies

Techniques for Pacific Bonito →

Baseline setup

Rod: Medium 7-8 ft spinning or conventional rod
Line: 12-20 lb mono or braid
Terminal: Small feathers, 1-3 oz spoons and jigs, wire-free light leaders

Recommended gear for this species

Rod · Best value

9' 5-weight fly rod outfit

≈ US$180-260

Covers chironomid lakes and small rivers with one setup.

Flies · Budget

Chironomid assortment (30 patterns)

≈ US$25-40

Chironomids are 60% of a lake rainbow's diet in spring.

Picks come from our rule library — never paid placements. Prices are guides; affiliate links may earn us a commission.

Typical size

Common 24-32 in (61-81 cm); large fish to about 40 in (102 cm)

On the table

Good if bled and iced at once — dark, rich meat best seared, grilled or smoked; locals often mislabel it skipjack.

Similar species

Atlantic BonitoAtlantic bonito lives only in the Atlantic and Mediterranean and never meets this species; the Pacific fish is the eastern Pacific Sarda chiliensis with the same striped-back, toothed bonito build

Skipjack TunaSkipjack tuna carries its dark stripes on the BELLY and has an unstriped back and tiny teeth; Pacific bonito is the mirror image — striped back, plain belly, obvious teeth

Regulations vary by area and can change in-season — always check the official rules for your area before you fish. Regulations guide →

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