The Blackmargin jawfish (Opistognathus nigromarginatus) is a saltwater fish of the family Opistognathidae that grows up to 19 cm.
Description
The Blackmargin jawfish is a jawfish (Opistognathidae) from shallow sand and rubble water of the Indo-West Pacific. The species grows to about 10 cm and has an elongate, pale body with large eyes and a very large mouth. Characteristically it uses its mouth to build a burrow in the soft bottom, reinforces it with pebbles and hovers upright above it; when in danger it dives in. The male broods the eggs in his mouth. It snaps at passing zooplankton. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Blackmargin jawfish?
The Blackmargin jawfish has an elongate, eel-like body and is mainly silver-grey.
Where does the Blackmargin jawfish live?
The Blackmargin jawfish lives in the sea (marine waters) and is mostly found around sand or mud bottom.
How big does the Blackmargin jawfish get?
The Blackmargin jawfish grows to a maximum of about 19 cm.
Is the Blackmargin jawfish dangerous to humans?
No, the Blackmargin jawfish is harmless to humans.
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
For anglers
Safety
Status & sources
Same genus Opistognathus
More from the family Opistognathidae
Download Fin's Fish Guide
Identify fish in seconds, log your catches and dives. Join the TestFlight beta.