Species guide
How to catch Threadsail filefish
Stephanolepis cirrhifer
saltwatergame fishMonacanthidae
The Threadsail filefish is a small, deep-bodied saltwater fish known for its distinctive thread-like dorsal fin. It feeds primarily on small crustaceans and seaweed. This species is popular among anglers in the Pacific region due to its unique appearance and moderate fight.
Where they live
Found in Pacific saltwater habitats, the Threadsail filefish prefers areas with abundant seaweed like Zostera marina and shelters where small crustaceans thrive.
Typical size
Up to about 30 cm
What they eat
- amphipods
- caprellids
- green algae
- moon jellyfish (juveniles)
- seaweed
Best baits
- small crustaceans
- pieces of seaweed
- shrimp
Best lures
- small jigs
- soft plastic baits
- light spoons
How to fish for them
- light tackle fishing
- bottom fishing
- float fishing
Track every Threadsail filefish you catch.
Bobbr turns each catch into a species collection, quests, and streaks. We're building it now — join the iOS waitlist for $19 lifetime founding access.
Claim founding access