Redstripe/Red-striped Cardinalfish Ostorhinchus margaritophorus

The Redstripe or Red-striped Cardinalfish seems to be a misnomer for this brown-striped fish (sometimes reddish brown), which is also called the Pearly Cardinalfish after the small, silvery white "portholes" along its flank lateral stripe.

It is native to shallow reefs and lagoons of the Indo-Malay archipelago in the western Pacific and grows to 7cm long.