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Striped Threadfin
Uncommon

Striped Threadfin

Polydactylus plebeius

A tropical marine fish with distinctive thread-like pectoral fin rays and horizontal stripes along its silvery body. Popular among anglers for its fighting ability and good eating quality.

The record

Striped Threadfin at a glance

Scientific name
Polydactylus plebeius
Typical size
12-24 inches, 1-5 lbs
Water
Saltwater
Habitat
Inshore
Rarity in the Fishdex™
Uncommon
Where it lives

Habitat

Found in shallow coastal waters, estuaries, and around structure like reefs and jetties. Anglers typically target them using live or cut bait near the bottom, often while fishing for other species like snapper or grouper.

Catch one and it is yours

Log a striped threadfin through the Cobia Camera and this entry fills in with your photo, your personal best, and the exact conditions on the day. The app also carries the slot and season rules for wherever you are standing.

How the Fishdex™ works
Questions

Striped Threadfin questions people ask

Striped Threadfin is Polydactylus plebeius.

A typical striped threadfin runs 12-24 inches, 1-5 lbs. Cobia records the length and weight of every striped threadfin you log and keeps your personal best on its Fishdex entry.

Found in shallow coastal waters, estuaries, and around structure like reefs and jetties. Anglers typically target them using live or cut bait near the bottom, often while fishing for other species like snapper or grouper. It is a salt water species, filed under inshore in the Fishdex.

Yes. Log one through the Cobia Camera and this entry fills in with your own photo, your personal best, and the conditions on the day you caught it. The app also carries the slot limits and season dates for wherever you are standing. It is free.

Free on iPhone

Tomorrow morning starts tonight

Set your home water, pick a drive radius, and wake up to a plan.

Download Cobia on the App Store Android coming soon

iPhone, iOS 17 or later. Setup takes about a minute.