The Smallmouth threadfin (Polydactylus microstomus) is a brackish-water fish of the family Polynemidae that grows up to 25 cm.
Description
The smallmouth threadfin is a threadfin (Polynemidae) from the Indo-West Pacific. The species has an elongate, silvery body with a projecting snout and a small, inferior mouth. Below the pectoral fin it bears free, thread-like fin rays that serve as feelers to detect prey on the bottom in turbid water. It inhabits coastal waters and estuaries over soft bottoms. It feeds on small crustaceans, worms and small fishes. The species is harmless to humans.
Frequently asked questions
How do you recognise the Smallmouth threadfin?
The Smallmouth threadfin is mainly silver-grey and shows a plain pattern.
Where does the Smallmouth threadfin live?
The Smallmouth threadfin lives in brackish water and is mostly found around sand or mud bottom.
How big does the Smallmouth threadfin get?
The Smallmouth threadfin grows to a maximum of about 25 cm. On average the species is around 15 cm.
Is the Smallmouth threadfin dangerous to humans?
No, the Smallmouth threadfin is harmless to humans.
Is the Smallmouth threadfin edible?
Yes, the Smallmouth threadfin is commonly eaten.
Download Fin's Fish Guide
Identify fish in seconds, log your catches and dives. Join the TestFlight beta.
All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
Safety
Status & sources
Same genus Polydactylus
More from the family Polynemidae
Download Fin's Fish Guide
Identify fish in seconds, log your catches and dives. Join the TestFlight beta.