Giuris margaritaceus, the snakehead gudgeon, Aporos sleeper, or ornate sleeper, is a species of fish in the family Eleotridae found in marine, brackish, and fresh waters from Madagascar to Melanesia.

This species grows to a total length of 29 cm (11 in) with a maximum recorded weight of 171 g (6.0 oz).

This species is important to the local peoples as a food fish.

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