Heteropenaeus is a monotypic genus of shrimps belonging to the family Penaeidae. Its only species is Heteropenaeus longimanus, known by the common name longarm prawn.Davie,"Crustasea: Malacostraca", Zoological catalogue of Australia, vol.19.3A, 2002

The longarm prawn is widespread throughout the tropical waters of the central Indo-Pacific region, from Indonesia to Philippines and from south Japan to New-Caledonia.

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