Also known as Nurseryfish, Whitesaddle Cardinalfish, White-saddled Cardinalfish, Yelloweye Cardinalfish.
Found in pairs or schools, during the day sheltering close to corals, dispersing at night to hunt for food, over silty mud slopes of lagoons and sheltered reefs.
They feed nocturnally on benthic crustaceans and small fish.
Length - 9cm
Depth - 1-30m
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. (edit) Ref: https://www.fishbase.se/summary/8589