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Saltwater · Year-round off northern South America; in our regions only a rare occurrence at the Panama-Colombia Caribbean border.

Smallscale Weakfish

Cynoscion microlepidotus

A large weakfish of the northern South American coast from Colombia to southern Brazil, distinguished by extremely small scales; it only marginally reaches eastern Caribbean Panama.

Seasons · Peak

Jan
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Smallscale Weakfish
AI-generated image

Identifying features

  • Scales very small and smooth, 140 or more transverse rows above the lateral line
  • Silvery-green to grey back, whitish belly, darkish tip to the dorsal fin
  • No chin barbel; large canines at the tip of the upper jaw
  • Soft dorsal fin with 22-25 rays; anal fin 8-10 soft rays
  • Larger maximum size (to 92 cm) than most Caribbean weakfishes

Habits

  • Lives over mud and sand in estuaries and shallow coastal water
  • Feeds on small fishes and crustaceans
  • Important locally in Maranhao, Brazil, elsewhere mixed with other weakfish landings
  • Adults mostly marine, juveniles in estuaries

Distribution

Panama — Pacific, Canal & Caribbean · PanamaOccasional

Where to find them

  • Estuaries of the Gulf of Uraba / far eastern Panama border area (rare)
  • Northern South American estuaries (core range, outside our regions)

Where they live

Muddy and sandy estuariesShallow coastal water to 30 m

How to catch them

Bottom fishing with natural bait Boat

Rig: Two-hook paternoster or Carolina rig with 1-3 oz sinker

Bait/lure: Live or fresh shrimp

Key tip: Keep the bait on the bottom over sand or mud and wait for the soft, tapping bite.

Bottom fishing with natural bait from shore Shore

Rig: Two-hook paternoster or Carolina rig with 1-3 oz sinker

Bait/lure: Live or fresh shrimp

Key tip: Keep the bait on the bottom over sand or mud and wait for the soft, tapping bite.

Best baits & lures

Fresh shrimpCut fishSmall live baitfish

Techniques for Smallscale Weakfish →

Baseline setup

  • Rod: Medium spinning or conventional rod 7-9 ft
  • Line: 20-30 lb braid with 30 lb fluorocarbon leader
  • Terminal: 2/0-4/0 circle hooks, 2-4 oz sinker or jig

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

Up to about 92 cm and 3 kg; commonly 40-60 cm.

On the table

Fine, firm flesh; a valued local food fish, good steamed, fried or in soups.

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 Smallscale Weakfish

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⚠ Heads-up: Smallscale Weakfish 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.