[2] The juveniles appear to mimic whichever local species of venomous blennies in the genus Meiacanthus which are blue or grey in colour.

Its range extends from the Maldives and India east to Papua New Guinea, the Solomon Islands and New Caledonia, north as far as southern Japan south to Australia.

[2] Diploprion bifasciatum prefers coastal habitats in semi-silty conditions but also occur in the vicinity of caves and crevices in rocky and coral reefs.

[1] It is a predatory species that is able to feed on relatively large prey which is captured and swallowed whole with its highly protrusible jaws.

Cuvier based his description on material collected by the German naturalist Heinrich Kuhl (1797-1821) and the Dutch physician, zoologist, botanist and mycologist Johan Conrad van Hasselt (1797-1823) and their unpublished descriptions of those specimens which they collected at the type locality of Java.