Saltwater · Year-round in warm Pacific water; schools are most often worked at night under lights
Shortfin Scad
Decapterus macrosoma
A small, slender schooling scad of the Indo-Pacific and eastern Pacific, hugely important as food and as bait. Anglers meet it as a sabiki catch under lights — and everything bigger eats it.
Seasons · Peak
Identifying features
- Very slender, elongate body, almost round in cross-section, metallic blue above and silvery below
- Single separate finlet behind both the dorsal and anal fins — the Decapterus signature
- Small black spot on the upper edge of the gill cover (opercle)
- Row of 24-40 scutes along the rear lateral line
- Short pectoral fin — the feature behind the name 'shortfin'
Habits
- Predominantly pelagic and schooling, usually at 30-70 m within a 20-214 m range
- Feeds on small planktonic crustaceans and fish larvae
- Gathers at lights at night, where it is taken on multi-hook sabiki rigs
- A key forage fish for tunas, jacks and billfish across its range
Distribution
Where to find them
- Under harbour and pier lights at night
- Over coastal reefs and drop-offs where schools mark on sonar
- Around anchored bait boats and FADs
Where they live
How to catch them
Sabiki fishing under lights Boat
Rig: Light rod, sabiki rig with 6 small hooks and a small weight
Bait/lure: Sabiki flies, optionally tipped with tiny shrimp
Key tip: Fish at night under lights or over sonar-marked schools at 30-70 m; gentle jigging keeps the whole school interested.
Pier and harbour micro-fishing Shore
Rig: Ultralight outfit, tiny hooks or a small sabiki
Bait/lure: Tiny shrimp or fish pieces
Key tip: Work the edge of the light circle in harbours; scad hang just outside the brightest water and dart in to feed.
Best baits & lures
Baseline setup
- Rod: Light 6'6" spinning rod
- Line: 8-12 lb mono or braid
- Terminal: Sabiki rigs, small weights, micro hooks
Recommended gear for this species
Rod · Best value
9' medium-heavy surf spinning rod
≈ US$110-170
Casts plugs and bait past the breakers and handles stripers, drum and bluefish in the wash.
Reel · Best value
5000 size sealed spinning reel
≈ US$120-180
Salt spray and dunkings kill cheap reels — a sealed body and 30 lb braid capacity are the surf standard.
Terminal · Budget
Topwater plugs, soft-plastic jigs and fish-finder rigs
≈ US$25-40
Plugs for blitzes, jigs for the trough, bait on a fish-finder rig when they won't chase — the inshore trio.
Picks are never paid placements. Prices are guides; price links are coming soon and none is an affiliate link yet.
Typical size
Common about 25 cm; maximum 35 cm
On the table
Important food fish in the Indo-Pacific, eaten fresh, dried and salted; in the Americas it is used mainly as live or cut bait.
Similar species
Regulations vary by area and can change in-season — always check the official rules for your area before you fish. Regulations guide →
Plan a trip for Shortfin Scad
Build today's plan⚠ Heads-up: Shortfin Scad doesn't occur around Vancouver, BC (or is very rare there), so it's not a sensible local target. Your plan stays in Vancouver, BC and is built around the fish that actually live there.