Note on the occurrence of a rare palaemonid prawn, Palaemonsewelli (Kemp, 1925) in South Vietnam, with its description (Decapoda: Caridea)

A rare palaemonid prawn Palaemon sewelli (Kemp, 1925) was found in abundance in a shallow and flat coastal region of southeastern Vietnam, at a depth of 4-9 m. This is the first record of the species from Vietnam. A description of the two colour morphs of the freshly collected specimens and notes on habitat, fishery, and economic importance are provided.