Description

Also known as Black-striped Cardinalfish, Broadstripe Cardinal, Broad-striped Soldierfish, Narrow-striped Cardinalfish, Nurseryfish, Striped Cardinalfish.

Found singly or in small schools, in shallow and deep drop-offs, over clear water, reef crests, and slopes of seaward reefs.
They feed nocturnally on small benthic invertebrates and worms.
Length - 11cm
Depth - 5-65m
Widespread Indo-Pacific

Males incubate their eggs inside their mouths, as the egg masses increase in size they can be found with wide open mouths where they shift the eggs around to aerate the egg masses. Ref: https://www.fishbase.se/summary/Ostorhinchus-angustatus.html