Saltwater · Year-round in the Caribbean; peak in warm months
Atlantic Threadfin (Barbu)
Polydactylus virginicus
The barbu is a small Caribbean threadfin with seven free pectoral filaments, common over sand and mud in surf and estuaries and a frequent, willing catch on small shrimp baits.
Seasons · Peak
Identifying features
- Seven (rarely eight) free thread-like pectoral filaments
- Silvery, slightly dusky body with a conical projecting snout
- Two widely separated dorsal fins
- Lateral line continues onto the tail fin and forks there
- Eye covered by a fatty adipose eyelid
Habits
- Nocturnal feeder on crustaceans, worms and arrow worms
- Young gather near river mouths
- Common around Caribbean islands over sand and mud
- May spawn over a prolonged season
Distribution
Where to find them
- Surf troughs along sandy Caribbean beaches
- Estuary mouths and mangrove edges
- Sand flats beside reef in 5-25 m
Where they live
How to catch them
Surf fishing with shrimp pieces Shore
Rig: Light surf or spinning rod, two-hook paternoster with size 4-6 hooks and 1-2 oz sinker
Bait/lure: Small shrimp pieces
Key tip: Cast into the trough behind the surf and keep the rig on sand; barbu feed at night and at dawn, so fish low light.
Estuary bottom fishing Boat
Rig: Light spinning tackle, small Carolina rig with a size 4 hook
Bait/lure: Shrimp or squid pieces
Key tip: Anchor at estuary mouths and mangrove edges and fish baits hard on the bottom over sand and mud.
Best baits & lures
Baseline setup
- Rod: Light 7-8 ft spinning or surf rod
- Line: 10-12 lb braid or mono
- Terminal: Size 4-6 hooks, 1-2 oz sinkers, 15-20 lb leader
Recommended gear for this species
Rod · Best value
7'6" medium-heavy jigging rod
≈ US$110-170
Works 2-6 oz jigs over rock and reef and still has the backbone to lift a halibut off the bottom.
Line · Budget
50 lb braid with 40 lb leader (200 yd)
≈ US$25-40
Thin braid cuts the current so jigs stay vertical; the leader shrugs off rock and teeth.
Terminal · Budget
Leadhead jigs, swimbaits and two-hook bottom rigs
≈ US$25-40
A leadhead with a swimbait tail is the universal bottom-fish catcher, from rockfish to cod to flounder.
Picks are never paid placements. Prices are guides; price links are coming soon and none is an affiliate link yet.
Typical size
Common about 20 cm; maximum 33 cm TL
On the table
Minor food fish; small but well regarded locally where caught in numbers.
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 Atlantic Threadfin (Barbu)
Build today's plan⚠ Heads-up: Atlantic Threadfin (Barbu) 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.